12-letter words containing b, l, a, s
- 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.
- blamableness — the state of being blamable
- blandishment — the act of blandishing; cajolery
- blanket toss — a game in which a person is repeatedly tossed into the air and caught on an open blanket by a group of people who hold the blanket at its edges and stretch and relax it for each toss and catch.
- blast effect — the damage caused by the force of an explosive blast
- blastocoelic — of or relating to the blastocoel
- blastomycete — any of a genus (Blastomyces) of yeastlike imperfect fungi that cause diseases in people and animals
- blastosphere — blastula
- blastulation — the process of blastula formation
- blatherskite — a talkative silly person
- blazing star — a North American liliaceous plant, Chamaelirium luteum, with a long spike of small white flowers
- bletherskate — a blatherer
- blind casing — (in a box window frame) a rough framework to which the trim is secured.
- bliss carman — (William) Bliss, 1861–1929, Canadian poet and journalist in the U.S.
- 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 island — an island off the coast of and a part of Rhode Island, at the E entrance to Long Island Sound.
- block signal — a fixed railroad signal governing the movements of trains entering and using a given section of track.
- blood plasma — the pale yellow fluid portion of the blood; blood from which red and white blood cells and platelets have been removed
- blood sample — an amount of a person's blood taken from their body for use in medical tests
- blood spavin — a disease of the hock joint of horses in which enlargement occurs because of collected fluids (bog spavin) bony growth (bone spavin) or distention of the veins (blood spavin)
- bloodstained — Someone or something that is bloodstained is covered with blood.
- blue catfish — a large freshwater catfish, Ictalurus furcatus, that is a popular food fish in the states of the Mississippi River valley.
- blue jasmine — a southern U.S. shrubby vine, Clematis crispa, of the buttercup family, having solitary, bell-shaped, blue or bluish-purple to pink flowers and bearing fruit with silky appendages.
- blue-sky law — a state law regulating the trading of securities: intended to protect investors from fraud
- blues guitar — blues guitar music
- bluesnarfing — the practice of using one Bluetooth-enabled mobile phone to steal contact details, ring tones, images, etc from another
- board school — (formerly) a school managed by a board elected by local ratepayers
- boardsailing — windsurfing
- bog asphodel — either of two liliaceous plants, Narthecium ossifragum of Europe or N. americanum of North America, that grow in boggy places and have small yellow flowers and grasslike leaves
- bombay hills — a row of hills marking the southern boundary of greater Auckland on the North Island, New Zealand
- bonnet glass — monteith (def 2).
- bonnet-glass — a large punch bowl, usually of silver, having a notched rim for suspending punch cups.
- borosilicate — a salt of boric and silicic acids
- bottle glass — glass used for making bottles, consisting of a silicate of sodium, calcium, and aluminium
- bottlewasher — a person or machine that washes bottles.
- bounce flash — a flash lamp designed to produce a bounced flash.
- box lacrosse — a form of lacrosse played indoors, usually on a hockey rink with a wooden floor, between two teams of six players.
- boyoma falls — a series of seven cataracts in the NE Democratic Republic of Congo, on the upper River Congo: forms an unnavigable stretch of 90 km (56 miles), which falls 60 m (200 ft)
- brass plaque — a brass plate screwed to a wall or other structure and engraved with a name or other information, esp to commemorate an important event
- brass-collar — unwaveringly faithful to a political party; voting the straight ticket: a brass-collar Democrat.
- breast drill — a geared drill that can be braced against the chest for additional leverage.
- breast wheel — a waterwheel onto which the propelling water is fed at the height of a horizontal axle.
- breastplough — a plough driven by the worker's breast, often used to pare turf
- breathalyser — a device for estimating the amount of alcohol in the breath: used in testing people suspected of driving under the influence of alcohol
- breathlessly — without breath or breathing with difficulty; gasping; panting: We were breathless after the steep climb.
- bridal suite — a room or set of rooms in a hotel for newly married couples
- british rail — the organization that ran the British railway system from 1948 until privatization in the mid-1990s
- brittle star — any echinoderm of the class Ophiuroidea, having the body composed of a central, rounded disk from which radiate long, slender, fragile arms.