12-letter words containing r, o
- blood sister — a sister by birth
- bloodcurdler — something causing great fright or horror: a bloodcurdler of a mystery novel.
- bloodthirsty — Bloodthirsty people are eager to use violence or display a strong interest in violent things. You can also use bloodthirsty to refer to very violent situations.
- bloody shirt — something, as a political issue or historical event, that can be used to stir up outrage, partisan support, etc.
- blow through — to leave; make off
- blue norther — a cold north wind that brings rapidly falling temperatures.
- blue pointer — a large shark, Isuropsis mako, of Australian coastal waters, having a blue back and pointed snout
- blue succory — a composite garden plant, Catananche caerulea, of southern Europe, having very hairy leaves and blue flower heads, used by the ancients as a love potion.
- blue vitriol — the fully hydrated blue crystalline form of copper sulphate
- boar-hunting — the practice of hunting wild boars
- board member — a member of board of directors
- board school — (formerly) a school managed by a board elected by local ratepayers
- 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 bolster — the lower transverse member of a car body to which the body center plate is attached.
- 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
- body-centred — (of a crystal) having a lattice point at the centre of each unit cell as well as at the corners
- 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-iron ore — a deposit of impure limonite formed in low, wet areas.
- 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.
- bognor regis — a resort in S England, in West Sussex on the English Channel: electronics industries. Regis was added to the name after King George V's convalescence there in 1929. Pop: 62 141 (2001)
- bogon filter — /boh'gon fil'tr/ Any device, software or hardware, that limits or suppresses the flow and/or emission of bogons. "Engineering hacked a bogon filter between the Cray and the VAXen, and now we're getting fewer dropped packets." See also bogosity.
- boiled shirt — a dress shirt with a stiff front
- boiler house — a building housing a boiler
- boilermaking — metal-working in heavy industry; plating or welding
- bois de rose — a grayish red or dark purplish red color.
- boisterously — rough and noisy; noisily jolly or rowdy; clamorous; unrestrained: the sound of boisterous laughter.
- bolt upright — If someone is sitting or standing bolt upright, they are sitting or standing very straight.
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- bomb shelter — a shelter, usually underground, in which people take refuge from bomb attacks
- bomber pilot — the pilot of a bomber
- bond servant — a person who serves in bondage; slave.
- bonding wire — A bonding wire is a wire connecting two pieces of equipment, often for hazard prevention.
- bonnet rouge — a red cap worn by ardent supporters of the French Revolution
- bonnyclabber — clotted or curdled milk
- bonus number — (in the National Lottery) a number announced after the normal six numbers which influences the amount of prize money paid
- 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.
- book burning — the destruction of writings of which the subject, the view of the author, or the like is considered politically or socially objectionable: used as a means of censorship or oppression.
- bookcrossing — the practice of deliberately leaving books in places where they will be found and read by other people
- booking form — a form used to book a holiday, accommodation, etc
- 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.
- boom-or-bust — boom-and-bust.
- boomer state — Oklahoma