12-letter words containing ack
- backswordman — a person who uses a backsword.
- backtrackers — Plural form of backtracker.
- backtracking — to return over the same course or route.
- backup light — Backup lights are the white lights on the back of a vehicle that shine when the vehicle moves backward.
- backwardness — toward the back or rear.
- backwoodsman — Backwoodsmen are people, especially politicians, who like the old ways of doing things, or who are involved in an organization at a local level.
- backwoodsmen — Plural form of backwoodsman.
- barrack life — the experiences, activities, etc that are characteristic of a soldier's time spent dwelling in a barracks
- barrack room — a room inside a military barracks, esp one in which soldiers sleep
- barracks bag — a large bag containing a soldier's personal belongings and equipment
- beaten track — well-trodden path or route
- bicycle rack — a metal frame for securing bicycles when they are not in use
- biker jacket — a short, close-fitting leather jacket with zips and studs, often worn by motorcyclists
- black acacia — a tall Australian tree, Acacia melanoxylon, of the legume family, having cream-yellow flowers and yielding a very light wood.
- black africa — Black Africa is the part of Africa to the south of the Sahara Desert.
- black balsam — Peru balsam.
- black beauty — a Biphetamine capsule.
- black beetle — another name for the oriental cockroach
- black bottom — a dance of the late 1920s that originated in America, involving a sinuous rotation of the hips
- black bryony — a climbing herbaceous Eurasian plant, Tamus communis, having small greenish flowers and poisonous red berries: family Dioscoreaceae
- black butter — beurre noir.
- black canyon — a canyon of the Colorado River between Arizona and Nevada: site of Boulder Dam.
- black cherry — a tree of the species Prunus serotina, having a small fleshy rounded edible fruit containing a hard stone
- black coffee — coffee with no milk, milk substitute, or cream added
- black cohosh — a plant of the ranunculaceous family, Cimicifuga racemosa, which is used as a natural alternative to hormone replacement therapy
- black comedy — a comedy dealing with an unpleasant situation in a pessimistic or macabre manner
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black cosmos — a garden plant, Cosmos diversifolius, of Mexico, having small, dahlialike tubers and solitary flower heads with red disk flowers and velvety, dark-red or purplish ray flowers.
- 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 knight — a person or firm that makes an unwelcome takeover bid for a company
- 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 locust — Also called false acacia, yellow locust. a North American tree, Robinia pseudoacacia, of the legume family, having pinnate leaves and clusters of fragrant white flowers.
- black market — If something is bought or sold on the black market, it is bought or sold illegally.
- black medick — a small European leguminous plant, Medicago lupulina, with trifoliate leaves, small yellow flowers, and black pods
- black muslim — a member of the Black Muslims
- 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 plague — Great Plague.
- 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 sapote — a tropical American tree, Diospyros digyna, related to the persimmon, having sweet, edible, green fruit that turns black when ripe.
- 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.