13-letter words containing i, u, r
- brilliant cut — a cut for gems
- brilliant-cut — a cut intended to enhance the brilliance of a gem with the least possible sacrifice of weight, characterized by a form resembling two pyramids set base to base, truncated so as to give a broad table and a very small culet, and having from 18 to 104 facets, 58 being typical.
- bristle brush — a brush made with animal bristles
- brittany blue — a medium greenish blue.
- broiler house — a building in which broiler chickens are reared in confined conditions
- brownie guide — a member of the Brownie Guides, one of the junior branches (aged 7–10 years) in The Guide Association
- brutalization — to make brutal.
- buccaneerings — the characteristic actions of a buccaneer
- 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.
- budget period — the time which a budget covers
- buggin's turn — promotion by seniority or rotation rather than merit.
- buggins' turn — the principle of awarding an appointment to members of a group in turn, rather than according to merit
- build bridges — to promote reconciliation or cooperation between hostile groups or people
- built-up roof — a usually flat or slightly sloped roof that is covered with a special material applied in sealed, waterproof layers.
- bullhead rail — a rail having a cross section with a bulbous top and bottom, the top being larger
- bully-ragging — to bully; harass: to bullyrag fraternity plebs.
- buprenorphine — an opiate used medicinally as a powerful analgesic
- bureaucratism — an official of a bureaucracy.
- bureaucratist — a believer in bureaucracy
- bureaucratize — to administer by or transform into a bureaucracy
- burglariously — in the manner of a burglar or buglary
- 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
- burning glass — a convex lens for concentrating the sun's rays into a small area to produce heat or fire
- burrowing owl — a ground owl (Athene cunicularia) of the prairie regions of North and South America having long legs and a small head: it makes its nest in abandoned burrows
- burt standish — Burt L. pseudonym of Gilbert Patten.
- bus mastering — bus master
- busheled iron — heterogeneous iron made from scrap iron and steel.
- 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.
- business park — an area specially designated and landscaped to accommodate business offices, warehouses, light industry, etc
- business trip — a journey made somewhere and back again for business purposes in one's working capacity
- 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.
- busto arsizio — a city in Lombardy, N Italy.
- butch haircut — a short haircut for men, similar to a crew cut.
- butcher knife — a large, very sharp knife for cutting or trimming meat.
- butcher linen — a strong, heavy fabric made of rayon or rayon and cotton with a linen finish, constructed in plain weave.
- butter cookie — Cookery. a plain cookie whose chief ingredients are butter, flour, and sugar.
- butter muslin — a fine loosely woven cotton material originally used for wrapping butter
- butterfingers — a person who drops things inadvertently or fails to catch things
- butterflyfish — any small tropical marine percoid fish of the genera Chaetodon, Chelmon, etc, that has a deep flattened brightly coloured or strikingly marked body and brushlike teeth: family Chaetodontidae
- butyl nitrite — a volatile liquid, C 4 H 9 NO 2 , the vapor of which can cause headache and vasodilation, used as an active ingredient in some household deodorizers, and misused by inhalation to prolong the sensation of orgasm.
- by its nature — If you say that something has a particular characteristic by its nature or by its very nature, you mean that things of that type always have that characteristic.
- by reputation — If you know someone by reputation, you have never met them but you have heard of their reputation.
- cabin cruiser — A cabin cruiser is a motor boat which has a cabin for people to live or sleep in.
- cadmium green — a pigment used in painting, consisting of a mixture of hydrated oxide of chromium with cadmium sulfide, and characterized by its strong green color and slow drying rate.
- cafe curtains — short, straight curtains, esp. for covering the lower part of a window, hung from a rod by means of sliding rings
- calcariferous — having a spur or spurs
- calliper rule — a measuring instrument having two parallel jaws, one fixed at right angles to the end of a calibrated scale and the other sliding along it
- camera lucida — an instrument attached to a microscope, etc to enable an observer to view simultaneously the image and a drawing surface to facilitate the sketching of the image