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15-letter words containing r, o, t, w

  • tomato hornworm — the larva of a hawk moth, Manduca quinquemaculata, having a black, hornlike structure at the rear, that feeds on the leaves of tomato, potato, and other plants of the nightshade family.
  • tower of london — a historic fortress in London, England: originally a royal palace, later a prison, now an arsenal and museum.
  • towers of hanoi — (games)   A classic computer science problem, invented by Edouard Lucas in 1883, often used as an example of recursion. "In the great temple at Benares, says he, beneath the dome which marks the centre of the world, rests a brass plate in which are fixed three diamond needles, each a cubit high and as thick as the body of a bee. On one of these needles, at the creation, God placed sixty-four discs of pure gold, the largest disc resting on the brass plate, and the others getting smaller and smaller up to the top one. This is the Tower of Bramah. Day and night unceasingly the priests transfer the discs from one diamond needle to another according to the fixed and immutable laws of Bramah, which require that the priest on duty must not move more than one disc at a time and that he must place this disc on a needle so that there is no smaller disc below it. When the sixty-four discs shall have been thus transferred from the needle on which at the creation God placed them to one of the other needles, tower, temple, and Brahmins alike will crumble into dust, and with a thunderclap the world will vanish." The recursive solution is: Solve for n-1 discs recursively, then move the remaining largest disc to the free needle. Note that there is also a non-recursive solution: On odd-numbered moves, move the smallest sized disk clockwise. On even-numbered moves, make the single other move which is possible.
  • town councillor — member of municipal government
  • transfer window — the period during the year in which a football club can transfer players from other teams into their own
  • troubled waters — a confused or chaotic state of affairs: The situation was terrible, but like many politicians he was attracted by troubled waters.
  • truck (on) down — to walk in a carefree, leisurely manner; stroll
  • trustworthiness — deserving of trust or confidence; dependable; reliable: The treasurer was not entirely trustworthy.
  • tweet you later — (on the Twitter website) goodbye; see you later
  • twelve-tone row — tone row.
  • twist one's arm — to combine, as two or more strands or threads, by winding together; intertwine.
  • two-star petrol — leaded petrol that has a low octane number; inferior leaded petrol
  • two-thirds rule — a former rule in the Democratic Party, effective 1832–1936, requiring a vote of at least two thirds of its national convention delegates to nominate a presidential and vice-presidential candidate.
  • tyrwhitt-wilson — Gerald Hugh, 14th Baron Berners [bur-nerz] /ˈbɜr nərz/ (Show IPA), 1883–1950, English composer, painter, and author.
  • unknown country — an unfamiliar topic, place, matter, etc
  • unseaworthiness — constructed, outfitted, manned, and in all respects fitted for a voyage at sea.
  • untrustworthily — in an untrustworthy manner; not trustworthily
  • upward mobility — movement from one social level to a higher one (upward mobility) or a lower one (downward mobility) as by changing jobs or marrying.
  • wager of battle — (in medieval Britain) a pledge to do battle for a cause, esp to decide guilt or innocence by single combat
  • walloon brabant — a province of central Belgium, formed in 1995 from the S part of Brabant province: densely populated and intensively farmed, with large industrial centres. Pop: 360 717 (2004 est). Area: 1091 sq km (421 sq miles)
  • warrant officer — (in the U.S. Armed Forces) an officer of one of four grades ranking above enlisted personnel and below commissioned officers.
  • water authority — an official body which is responsible for providing water
  • water pennywort — any of numerous perennial herbs of the genus Hydrocotyle, of the parsley family, having rounded leaves and living in water or marshy places.
  • water pollution — the pollution of the sea and rivers
  • waterfall model — (programming)   A software life-cycle or product life-cycle model, described by W. W. Royce in 1970, in which development is supposed to proceed linearly through the phases of requirements analysis, design, implementation, testing (validation), integration and maintenance. The Waterfall Model is considered old-fashioned or simplistic by proponents of object-oriented design which often uses the spiral model instead. Earlier phases are sometimes called "upstream" and later ones "downstream". Compare: iterative model.
  • waterford glass — fine cut or gilded glass made in Waterford, Ireland, having a slight blue cast due to the presence of cobalt.
  • weather balloon — sounding balloon.
  • weather station — an installation equipped and used for meteorological observation.
  • weather through — to pass or go safely through a storm, peril, difficulty, etc.
  • weatherboarding — an early type of board used as a siding for a building.
  • weatherproofing — Present participle of weatherproof.
  • well trajectory — The well trajectory is the direction in which the well is drilled.
  • well turned out — smartly dressed
  • well-brought-up — If you say that someone, especially a child, is well-brought-up, you mean that they are very polite because they have been taught good manners.
  • well-controlled — to exercise restraint or direction over; dominate; command: The car is difficult to control at high speeds. That zone is controlled by enemy troops.
  • well-elaborated — worked out with great care and nicety of detail; executed with great minuteness: elaborate preparations; elaborate care. Synonyms: perfected, painstaking. Antonyms: simple.
  • well-formulated — to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory.
  • well-understood — simple past tense and past participle of understand.
  • wentworth scale — a scale for specifying the sizes (diameters) of sedimentary particles, ranging from clay particles (less than 1⁄256 mm) to boulders (over 256 mm)
  • west carrollton — a town in W Ohio.
  • west hartlepool — a former borough, now part of Hartlepool, in Cleveland County, in NE England, at the mouth of the Tees.
  • western hemlock — a tall, narrow hemlock, Tsuga heterophylla, of western North America: the state tree of Washington.
  • white cast iron — cast iron having most or all of its carbon in the form of cementite and exhibiting a silvery fracture.
  • white corpuscle — white blood cell.
  • white snakeroot — a North American plant, Eupatorium urticaefolium, the roots or rhizomes of which have been used as a remedy for snakebite
  • wilson's petrel — a small petrel, Oceanites oceanicus, that breeds in the Southern Hemisphere but ranges into the North Atlantic and Pacific oceans.
  • wilson's thrush — veery.
  • windfall profit — a profit that arises thanks to an external event over which the person profiting had no control
  • winter flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
  • winter holidays — a period of rest from work or studies taken in winter
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