13-letter words containing a, d, u
- bermuda onion — a large white or yellow onion with a mild flavor, grown in Texas, California, etc.
- bidenticulate — having two small teeth or toothlike processes.
- bildungsroman — a novel concerned with a person's formative years and development
- birthday suit — If you are in your birthday suit, you are not wearing any clothes.
- biscuit bread — biscuits or a biscuit: I like biscuit bread more than corn bread for supper.
- black mustard — a Eurasian plant, Brassica (or Sinapsis) nigra, with clusters of yellow flowers and pungent seeds from which the condiment mustard is made: family Brassicaceae (crucifers)
- black pudding — Black pudding is a thick sausage which has a black skin and is made from pork fat and pig's blood.
- black studies — a program of studies in black history and culture offered by a school or college, often including Afro-American history and black literature.
- blood sausage — a kind of black sausage made from minced pork fat, pig's blood, and other ingredients
- bloody sunday — (in Northern Ireland) 30th January 1972, when British soldiers shot dead thirteen marchers in Londonderry who were protesting against the UK government's policy of internment
- board measure — a system of units for measuring wood based on the board foot. 1980 board feet equal one standard
- boardinghouse — a private house in which accommodation and meals are provided for paying guests
- body and soul — You use body and soul to mean every part of you, including your mind and your emotions.
- body language — Your body language is the way in which you show your feelings or thoughts to other people by means of the position or movements of your body, rather than with words.
- bonded labour — a system in which a person provides labour in order to pay off debts
- boom-and-bust — characteristic of a period of economic prosperity followed by a depression.
- boudoir grand — a domestic grand piano between 5 and 6 feet in length
- bounce around — to spring back from a surface in a lively manner: The ball bounced off the wall.
- bounced flash — a flash bounced off a reflective surface, as a ceiling or wall, to illuminate a subject indirectly.
- boundary line — a line marking one of the edges of a playing area
- boundary peak — a peak in SW Nevada, in the White Mountains, near the California border: highest elevation in Nevada. 13,143 feet (4006 meters).
- boundary scan — The use of scan registers to capture state from device input and output pins. IEEE Standard 1149.1-1990 describes the international standard implementation (sometimes called JTAG after the Joint Test Action Group which began the standardisation work).
- bourdon gauge — a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases the tube tends to straighten and the pointer indicates the applied pressure
- braggadocious — boastful
- brandy butter — butter and sugar creamed together with brandy and served with Christmas pudding, etc
- brass foundry — a foundry that makes things from brass
- brassfounding — the practice of making things from brass
- bread pudding — a rich cake made with bread soaked in milk, eggs, dried fruit and spices and baked, usually eaten cold
- brown mustard — black mustard. See under mustard (def 2).
- buck and wing — a boisterous tap dance, derived from Black and Irish clog dances
- bucket ladder — a series of buckets that move in a continuous chain, used to dredge riverbeds, etc, or to excavate land
- bud variation — any variation in a bud due to changes in either its genetic composition or environment or both such that the resulting flower, fruit, or shoot differs from others of the same plant or species.
- bufadienolide — any of a family of steroid lactones, occurring in toad venom and squill, that possess cardiac-stimulating and antitumor activity.
- buffalo plaid — a plaid with large blocks formed by the intersection of two different-color yarns, typically red and black.
- building land — land on which construction can take place
- bulkhead deck — the uppermost continuous deck in the hull of a vessel, forming watertight compartments with the main transverse bulkheads.
- bullet-headed — with a head shaped like a bullet
- bullhead rail — a rail having a cross section with a bulbous top and bottom, the top being larger
- bumble around — When someone bumbles around or bumbles about, they behave in a confused, disorganized way, making mistakes and usually not achieving anything.
- bundle sheath — a layer of cells in plant leaves and stems that surrounds a vascular bundle.
- burial ground — A burial ground is a place where bodies are buried, especially an ancient place.
- buridan's ass — an example intended to show the deficiency of reason. An ass standing equidistant from two identical heaps of oats starves to death because reason provides no grounds for choosing to eat one rather than the other
- burt standish — Burt L. pseudonym of Gilbert Patten.
- business card — A person's business card or their card is a small card which they give to other people, and which has their name and details of their job and company printed on it.
- bustard quail — button quail.
- bustard-quail — any of several birds of the family Turnicidae, of warmer parts of the Old World, resembling but not related to the true quail. Also called bustard quail, hemipode.
- butanoic acid — kind of acid
- butyraldehyde — a colourless flammable pungent liquid used in the manufacture of resins. Formula: CH3(CH2)2CHO
- buzzard's bay — an inlet of the Atlantic, in SE Massachusetts. 30 miles (48 km) long.
- cacodyl group — the univalent group (CH 3) 2 As−, derived from arsine.