12-letter words containing a, b, o, r
- board shorts — shorts with longer legs, originally meant to protect a surfer's legs against the surfboard
- boarder baby — an infant or young child who is abandoned or orphaned and left in a hospital for lack of a foster home.
- boarding out — the local-authority practice of placing a client in a foster family or voluntary establishment and paying for it
- boardsailing — windsurfing
- boating trip — a trip or holiday in a boat such as a sailing boat or canal boat
- bobbery pack — a mixed pack of hunting dogs, often not belonging to any of the hound breeds
- body repairs — repairs to the bodywork of cars
- body scanner — a machine using X-rays and a computer, used in medicine to look for signs of disease, or in security operations to look for drugs, weapons, etc
- bodyboarding — the sport of surfing using a bodyboard
- bog rosemary — any of several species (genus Andromeda) of evergreen shrubs of the heath family, native to cold bogs of North America and Europe, with pink flowers and narrow leaves
- bog-standard — If you describe something as bog-standard you mean that is an ordinary example of its kind, with no exciting or interesting features.
- boilermaking — metal-working in heavy industry; plating or welding
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- bond servant — a person who serves in bondage; slave.
- bonnyclabber — clotted or curdled milk
- boobytrapped — to set with or as if with a booby trap; attach a booby trap to or in.
- boogie board — a small, flexible plastic surfboard, ridden lying down.
- boolean ring — a nonempty collection of sets having the properties that the union of two sets of the collection is a set in the collection and that the relative complement of each set with respect to any other set is in the collection.
- boomer state — Oklahoma
- boomeranging — a bent or curved piece of tough wood used by the Australian Aborigines as a throwing club, one form of which can be thrown so as to return to the thrower.
- booster seat — A booster seat or a booster cushion is a special seat which allows a small child to sit in a higher position, for example at a table or in a car.
- boot-scraper — a contraption consisting of an upright metal shape formerly placed outside some houses to enable people to scrape the mud from their boots before going in
- border guard — a guard stationed on a border between countries
- border state — a state adjacent to a border
- border taxes — taxes payable on goods taken across a border
- born-digital — relating to or noting documents, images, etc., that are created and managed in electronic form: electronic preservation of born-digital content; a born-digital e-book that will not be available in print.
- borosilicate — a salt of boric and silicic acids
- borough hall — a building housing the administrative offices of a borough.
- bottle party — a party to which guests bring drink
- bottlewasher — a person or machine that washes bottles.
- bottom break — a branch coming from the bottom of a plant stem, usually formed by pinching and disbudding.
- bottom grass — any grass that grows on bottoms or lowlands.
- bottom quark — a type of quark with a mass of c. 4.7 to 5.3 GeV/c2, a negative charge that is 1⁄3 the charge of an electron, zero charm, and zero strangeness
- boulangerite — a bluish lead-gray mineral, lead antimony sulfide, Pb 5 Sb 4 S 11 , a minor ore of lead.
- boulder clay — an unstratified glacial deposit consisting of fine clay, boulders, and pebbles
- boulevardier — (originally in Paris) a fashionable man, esp one who frequents public places
- bound charge — any electric charge that is bound to an atom or molecule (opposed to free charge).
- bowel cancer — cancer of the colon
- box lacrosse — a form of lacrosse played indoors, usually on a hockey rink with a wooden floor, between two teams of six players.
- boxgrove man — a type of primitive man, probably Homo heidelbergensis, and probably dating from the Middle Palaeolithic period some 500 000 years ago; remains were found at Boxgrove in West Sussex in 1993 and 1995
- brachycerous — (of insects) having short antennae
- bracket foot — a corner foot of a chest or the like joining the sides in a concave line.
- braggadocios — empty boasting; bragging.
- brain tumour — a tumour that is situated in the brain
- brainstormer — a person who brainstorms
- branch depot — one of a several depots receiving stock from the same central supplier
- branch point — Electricity. a point in an electric network at which three or more conductors meet.
- brass-collar — unwaveringly faithful to a political party; voting the straight ticket: a brass-collar Democrat.
- brassfounder — a person who makes things from brass
- break ground — to do something that has not been done before