12-letter words containing a, k, r
- black butter — beurre noir.
- black cherry — a tree of the species Prunus serotina, having a small fleshy rounded edible fruit containing a hard stone
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black forest — wooded mountain region in SW Germany
- black friday — the day after the US Thanksgiving Day in late November, regarded as the start of the Christmas shopping season
- black grouse — a large N European grouse, Lyrurus tetrix, the male of which has a bluish-black plumage and lyre-shaped tail
- black heroin — a very potent and addictive form of heroin that is dark-colored.
- black letter — a kind of heavy-faced, ornamental printing type
- black liquor — (in making wood pulp for paper) the liquor that remains after digestion.
- black market — If something is bought or sold on the black market, it is bought or sold illegally.
- black papers — unofficial papers criticizing government policy
- black pepper — Black pepper is pepper which is dark in colour and has been made from the dried berries of the pepper plant, including their black outer cases.
- black pewter — pewter composed of 60 percent tin and 40 percent lead.
- black poplar — a Eurasian tree, Populus nigra
- black powder — gunpowder as used in sports involving modern muzzleloading firearms
- black prince — Edward2 (Prince of Wales)
- black scoter — a scoter of Eurasia and North America, Melanitta nigra, the adult male of which is black.
- black spruce — a coniferous tree, Picea mariana, of the northern regions of North America, growing mostly in cold bogs and having dark green needles
- black stream — a warm ocean current in the Pacific, flowing N along the E coast of Taiwan, NE along the E coast of Japan, and continuing in an easterly direction into the open Pacific.
- black sucker — a hog sucker, Hypentelium nigricans, of eastern U.S. streams.
- black-figure — pertaining to or designating a style of vase painting developed in Greece in the 7th and 6th centuries b.c., chiefly characterized by silhouetted figures painted in black slip on a red clay body, details incised into the design, and a two-dimensional structure of form and space.
- black-market — to black-marketeer.
- blackbirding — a common European thrush, Turdus merula, the male of which is black with a yellow bill.
- blackcurrant — In Europe, blackcurrants are a type of very small, dark purple fruits that grow in bunches on bushes.
- blackhearted — wicked; evil
- bladder kelp — any of various giant brown algae with air bladders that buoy up the leafy portions
- bladderwrack — any of several seaweeds of the genera Fucus and Ascophyllum, esp F. vesiculosus, that grow in the intertidal regions of rocky shores and have branched brown fronds with air bladders
- blanket roll — a blanket or sleeping bag rolled into a cylindrical pack for easy carrying and outdoor use by hikers, soldiers, cowboys, etc., often with cooking utensils, food, and personal articles carried inside.
- blatherskite — a talkative silly person
- bletherskate — a blatherer
- blister pack — a type of packet in which small items are displayed and sold, consisting of a transparent dome of plastic or similar material mounted on a firm backing such as cardboard
- block heater — an electrically operated immersion heater fitted either to enter the water hose or the water jacket surrounding the cylinder block of a motor to warm the coolant in cold weather.
- bobbery pack — a mixed pack of hunting dogs, often not belonging to any of the hound breeds
- boilermaking — metal-working in heavy industry; plating or welding
- bottom break — a branch coming from the bottom of a plant stem, usually formed by pinching and disbudding.
- 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
- bracket foot — a corner foot of a chest or the like joining the sides in a concave line.
- bracket lamp — a wall light that is attached to the wall by a bracket
- bradykinesia — abnormal slowness of physical movement, esp as an effect of Parkinson's disease
- bradykinetic — slowness of movement, as found, for example, in Parkinson's disease.
- brain-picker — the act of obtaining information or ideas by questioning another person.
- brake assist — a part of a vehicle's braking system that automatically boosts braking pressure in an emergency situation
- brake lining — a curved thin strip of an asbestos composition riveted to a brake shoe to provide it with a renewable surface
- bread basket — If an area or region is described as the bread basket of a country, it provides a lot of the food for that country because crops grow very easily there. It therefore produces wealth for the country.
- bread-basket — a basket or similar container for bread or rolls.
- break a leg! — good luck!
- break ground — to do something that has not been done before
- break of day — dawn; daybreak.
- breakdancing — a type of vigorous dance
- breaker card — the first card in the carding process, used to open the raw stock and to convert it into sliver form.