12-letter words containing r, o
- backgrounder — A backgrounder is a short article in a newspaper or magazine that provides background information about a particular subject.
- backroom boy — You can refer to a man as a backroom boy when he does important work in an organization and has good ideas but is not seen or known about by the public.
- backswordman — a person who uses a backsword.
- bacon-slicer — a machine for cutting bacon into slices
- bacteriocide — Alternative form of bactericide.
- bacteriology — Bacteriology is the science and the study of bacteria.
- bacteriostat — any substance that arrests the growth or reproduction of bacteria but does not kill them
- bad scran to — bad luck to
- baffle board — a plate or mechanical device designed to restrain or regulate the flow of a fluid, the emission of light or sound, or the distribution of sound, esp in a loudspeaker or microphone
- bagworm moth — any moth of the family Psychidae
- baker's oven — an oven used esp for baking bread
- ball control — the skill of controlling the ball in a game such as football or tennis
- ball of fire — a very lively person
- ballad opera — an opera consisting of popular tunes to which appropriate words have been set, interspersed with spoken dialogue
- balladmonger — (formerly) a seller of ballads, esp on broadsheets
- balloon tire — a wide, deep-walled pneumatic tire with relatively low air pressure to lessen the shock of bumps
- balloon tyre — a pneumatic tyre containing air at a relatively low pressure and having a wide tread
- ballot paper — A ballot paper is a piece of paper on which you indicate your choice or opinion in an election or ballot.
- banderillero — a bullfighter's assistant who sticks banderillas into the bull
- bank robbery — theft from a bank
- banksia rose — a climbing rose, Rosa banksiae, native to China, having long, serrated leaves and white or yellow flowers.
- banner cloud — a plume-shaped cloud extending downwind from an isolated mountain peak. Also called cloud banner. Compare cap cloud (def 1).
- banquet room — A banquet room is a room in a hotel where large formal meals for many people can be held.
- barbados nut — an ornamental, tropical American tree, Jatropha curcas, of the spurge family, having ivylike leaves, small, yellow or greenish-yellow flowers, and olive-shaped fruit yielding a purgative, poisonous oil.
- barbarossa i — (Aruj) died 1518, Barbary pirate, born in Greece.
- barcalounger — a type of reclinable armchair with an extendable footrest
- barcoo river — a river in E central Australia, in SW Queensland: joins with the Thomson River to form Cooper Creek
- bard of avon — Shakespeare
- bardolatrous — relating to or characterized by bardolatry
- barge couple — either of a pair of outside rafters along the gable end of a roof
- barge course — the overhang of the gable end of a roof
- barium oxide — a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. Formula: BaO
- barking frog — a robber frog, Hylactophryne augusti, of Texas, New Mexico, and Mexico, having a call like a dog's bark.
- barn swallow — the US and Canadian name for the common swallow, Hirundo rustica
- barnstormers — Plural form of barnstormer.
- barnstorming — A barnstorming performance is full of energy and very exciting to watch.
- barodynamics — the branch of mechanics concerned with heavy structures
- barometrical — (archaic) Relating to, or observed with, a barometer, barometric.
- barophoresis — the diffusion of suspended particles at a rate dependent on external forces
- baroreceptor — a collection of sensory nerve endings, principally in the carotid sinuses and the aortic arch, that monitor blood pressure changes in the body
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- barrack room — a room inside a military barracks, esp one in which soldiers sleep
- barratrously — In a barratrous manner.
- barrel organ — A barrel organ is a large machine that plays music when you turn the handle on the side. Barrel organs used to be played in the street to entertain people.
- barrow point — the northernmost tip of Alaska, on the Arctic Ocean
- basidiocarps — Plural form of basidiocarp.
- basidiospore — one of the spores, usually four in number, produced in a basidium
- bastardsword — Alternative spelling of bastard sword.
- bathochromic — denoting or relating to a shift to a longer wavelength in the absorption spectrum of a compound
- baton charge — A baton charge is an attacking forward movement made by a large group of policemen carrying batons.