20-letter words containing b, a, c, k
- a drop in the bucket — an amount very small in relation to what is needed or desired
- armchair quarterback — a person who is not a quarterback (or general, etc.), but offers opinions and criticism on the performance or decisions of those who are
- back the wrong horse — to bet on a horse that loses the race
- back-of-the-envelope — (of a plan, calculation, etc) composed or performed quickly and without detailed analysis or research
- background radiation — low-intensity radiation from, for example, small amounts of radioisotopes in soil, air, building materials, etc
- backward and forward — If someone or something moves backward and forward, they move repeatedly first in one direction and then in the opposite direction.
- backwards compatible — backward compatibility
- barrack-room ballads — a volume of poems (1892) by Rudyard Kipling, including Gunga Din, Danny Deever, and Mandalay.
- bismarck archipelago — a group of over 200 islands in the SW Pacific, northeast of New Guinea: part of Papua New Guinea. Main islands: New Britain, New Ireland, Lavongai, and the Admiralty Islands. Chief town: Rabaul, on New Britain. Pop: 566 610 (2000). Area: 49 658 sq km (19 173 sq miles)
- black lung (disease) — a disease of the lungs caused by the inhalation of coal dust; anthracosis
- black-bellied plover — a large plover, Pluvialis squatarola, of both the New and Old Worlds, having black underparts when in nuptial plumage.
- black-throated diver — a diving bird, Gavia arctica, found in Europe and Asia, and a rare summer visitor to the UK
- blackburnian warbler — a black-and-white North American wood warbler, Dendroica fusca, having an orange throat and an orange and black head.
- buck's horn plantain — a Eurasian plant, Plantago coronopus, having leaves resembling a buck's horn: family Plantaginaceae
- checkbook journalism — the practice of paying for a news story or an interview, or for exclusive broadcasting or publishing rights.
- checkerboard pattern — checked pattern that looks like a draughtboard
- colour look-up table — colour palette
- come back to someone — (of something forgotten) to return to someone's memory
- diamondback terrapin — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
- double-trailer truck — tandem trailer (def 1).
- duck-billed dinosaur — hadrosaur.
- duck-billed platypus — platypus.
- dynamic link library — Dynamically Linked Library
- frederick barbarossa — ("Frederick Barbarossa") 1123?–90, king of Germany 1152–90; king of Italy 1152–90: emperor of the Holy Roman Empire 1152–90.
- front-to-back engine — an engine in which the crankshaft is arranged front to back along the axis of the vehicle
- like a ton of bricks — (used esp of the manner of punishing or reprimanding someone) with great force; severely
- microwave background — a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began
- monkey on one's back — any mammal of the order Primates, including the guenons, macaques, langurs, and capuchins, but excluding humans, the anthropoid apes, and, usually, the tarsier and prosimians. Compare New World monkey, Old World monkey.
- nickel tetracarbonyl — nickel carbonyl.
- off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.
- pick someone's brain — to obtain information or ideas from someone
- red-winged blackbird — a North American blackbird, Agelaius phoeniceus, the male of which is black with scarlet patches, usually bordered with buff or yellow, on the bend of the wing.
- rocky mountain basic — (language) The BASIC language used by Hewlett Packard on their 680x0-based computers. Rocky Mountain Basic is good for interfaces to IEEE 488 controls and contains many mathematical and matrix functions. It has about 600 commands. Typical applications include automatic test stations.
- second-hand bookshop — a shop selling second-hand books
- server message block — (protocol) (SMB) A client/server protocol that provides file and printer sharing between computers. In addition SMB can share serial ports and communications abstractions such as named pipes and mail slots. SMB is similar to remote procedure call (RPC) specialised for file system access. SMB was developed by Intel, Microsoft, and IBM in the early 1980s. It has also had input from Xerox and 3Com. It is the native method of file and print sharing for Microsoft operating systems; where it is called Microsoft Networking. Windows for Workgroups, Windows 95, and Windows NT all include SMB clients and servers. SMB is also used by OS/2, Lan Manager and Banyan Vines. There are SMB servers and clients for Unix, for example Samba and smbclient. SMB is a presentation layer protocol structured as a large set of commands (Server Message Blocks). There are commands to support file sharing, printer sharing, user authentication, resource browsing, and other miscellaneous functions. As clients and servers may implement different versions ("dialects") of the protocol they negotiate before starting a session. The redirector packages SMB requests into a network control block (NBC) structure that can be sent across the network to a remote device. SMB originally ran on top of the lower level protocols NetBEUI and NetBIOS, but now typically runs over TCP/IP. Microsoft have developed an extended version of SMB for the Internet, the Common Internet File System (CIFS), which in most cases replaces SMB. CIFS runs only runs over TCP/IP.
- short back and sides — If a man has a short back and sides, his hair is cut very short at the back and sides with slightly thicker, longer hair on the top of the head.
- skull and crossbones — a representation of a front view of a human skull above two crossed bones, originally used on pirates' flags and now used as a warning sign, as in designating substances as poisons.
- to get off sb's back — If you tell someone to get off your back, you are telling them angrily to stop criticizing you or putting pressure on you.
- to get your own back — If you get your own back on someone, you have your revenge on them because of something bad that they have done to you.
- to keep your balance — If you keep your balance, for example, when standing in a moving vehicle, you remain steady and do not fall over. If you lose your balance, you become unsteady and fall over.
- upper income bracket — a grouping of the highest earning tax payers
- watch sb like a hawk — If you watch someone like a hawk, you observe them very carefully, usually to make sure that they do not make a mistake or do something you do not want them to do.
- watch someone's back — the rear part of the human body, extending from the neck to the lower end of the spine.
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