13-letter words containing b, u, o
- brown mustard — black mustard. See under mustard (def 2).
- 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.
- bubble column — A bubble column is a reactor in which a gas bubbles up through a liquid or slurry.
- bubble memory — a method of storing high volumes of data by the use of minute pockets of magnetism (bubbles) in a semiconducting material. The bubbles may be caused to migrate past a read head or to a buffer area for storage
- bûche de noël — a French Christmas cake made from a thin layer of spongecake that is rolled up and frosted so as to resemble a decorative Yule log
- 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
- buenas noches — good night
- bufadienolide — any of a family of steroid lactones, occurring in toad venom and squill, that possess cardiac-stimulating and antitumor activity.
- buff-tip moth — a large European moth, Phalera bucephala, having violet-brown buff-tipped forewings held at rest around the body so that it resembles a snapped-off twig
- buffalo berry — a shrub (genus Shepherdia) of the oleaster family, native to W North America, with silvery leaves
- buffalo chips — the dried dung of buffalo used as fuel, especially by early settlers on the western plains.
- buffalo cloth — a heavyweight woolen fabric constructed in twill weave and having a shaggy pile.
- buffalo grass — a short grass, Buchloë dactyloides, growing on the dry plains of the central US
- buffalo grove — a city in NE Illinois.
- buffalo plaid — a plaid with large blocks formed by the intersection of two different-color yarns, typically red and black.
- buffalo wings — spicy fried segments of chicken wings, usually served with celery sticks and a sauce of blue cheese
- buffer memory — a temporary holding area for data
- building plot — a piece of land on which a house can be built
- built-up roof — a usually flat or slightly sloped roof that is covered with a special material applied in sealed, waterproof layers.
- bulbourethral — of or relating to the rounded mass of tissue surrounding the urethra at the root of the penis.
- bully for you — well done! bravo!
- bulwer-lytton — Edward George Earle Lytton1st Baron Lytton of Knebworth 1803-73; Eng. novelist & playwright: father of Edward Robert Bulwer-Lytton
- bumble around — When someone bumbles around or bumbles about, they behave in a confused, disorganized way, making mistakes and usually not achieving anything.
- bums on seats — If the organizers of an event such as a concert want to put bums on seats, they want a lot of people to attend it.
- bundle of his — atrioventricular bundle.
- bunko steerer — a swindler, especially a person who lures another to a gambling game to be cheated.
- buoyancy tank — an enclosed air-filled section of a boat, ship or hovercraft designed to keep it afloat and prevent it from sinking
- buoyant force — the law that a body immersed in a fluid is buoyed up by a force (buoyant force) equal to the weight of the fluid displaced by the body.
- buprenorphine — an opiate used medicinally as a powerful analgesic
- burglar-proof — designed to be secure and to frustrate any attempted burglary
- 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.
- 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
- busheled iron — heterogeneous iron made from scrap iron and steel.
- businesswoman — A businesswoman is a woman who works in business.
- buster collar — a round collar, similar to a lampshade in shape, that is fitted round the neck of an animal or bird, for example to prevent it removing or interfering with a dressing or other treatment
- busto arsizio — a city in Lombardy, N Italy.
- butanoic acid — kind of acid
- butcher block — designating or of a thick slab made by gluing together strips of hardwood, as maple or oak, used for counter and table tops, etc.
- butcher's boy — a boy doing deliveries for a butcher and perhaps also learning the butchery trade, esp in the past
- butter cookie — Cookery. a plain cookie whose chief ingredients are butter, flour, and sugar.
- butter cooler — an earthenware container, consisting of a dish and cover, used to keep butter cool
- buttoned-down — conventional or conservative
- buttress root — a tree root that extends above ground as a platelike outgrowth of the trunk supporting the tree. Buttress roots are mainly found in trees of tropical rain forests
- butyl alcohol — any of four isomeric alcohols, C4H9OH, obtained from petroleum products: used as solvents and in organic synthesis
- butyrophenone — a drug used to treat psychiatric disorders
- butyryl group — the univalent group C 4 H 7 O–.
- by reputation — If you know someone by reputation, you have never met them but you have heard of their reputation.