20-letter words containing a, c, h, k, n
- a drop in the bucket — an amount very small in relation to what is needed or desired
- arches national park — a national park in E Utah: natural arch formations. 114 sq. mi. (295 sq. km).
- aschheim-zondek test — a test used to detect whether a woman is pregnant by noting the effect on the ovaries of an immature mouse or rabbit injected with her urine.
- at the crack of dawn — If you say that someone does something at the crack of dawn, you are emphasizing that they do it very early in the morning.
- 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
- 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
- chikamatsu monzaemon — (born Sugimori Nobumori) 1653-1724; Jpn. dramatist: called the Shakespeare of Japan
- chip scale packaging — (hardware) (CSP) A type of surface mount integrated circuit packaging that provides pre-speed-sorted, pre-tested and pre-packaged die without requiring special testing. An example is Motorola's Micro SMT packaging. See also: chip-on-board, flip chip, multichip module, known good die, ball grid array.
- chuck it all (in/up) — If someone chucks it all, they stop doing their job, and usually move somewhere else. In British English you can also say that someone chucks it all up or chucks it all in.
- commonwealth hackish — (jargon) Hacker jargon as spoken outside the US, especially in the British Commonwealth. It is reported that Commonwealth speakers are more likely to pronounce truncations like "char" and "soc", etc., as spelled (/char/, /sok/), as opposed to American /keir/ and /sohsh/. Dots in newsgroup names (especially two-component names) tend to be pronounced more often (so soc.wibble is /sok dot wib'l/ rather than /sohsh wib'l/). The prefix meta may be pronounced /mee't*/; similarly, Greek letter beta is usually /bee't*/, zeta is usually /zee't*/, and so forth. Preferred metasyntactic variables include blurgle, "eek", "ook", "frodo", and "bilbo"; "wibble", "wobble", and in emergencies "wubble"; "banana", "tom", "dick", "harry", "wombat", "frog", fish, and so on and on (see foo). Alternatives to verb doubling include suffixes "-o-rama", "frenzy" (as in feeding frenzy), and "city" (examples: "barf city!" "hack-o-rama!" "core dump frenzy!"). Finally, note that the American terms "parens", "brackets", and "braces" for (), [], and {} are uncommon; Commonwealth hackish prefers "brackets", "square brackets", and "curly brackets". Also, the use of "pling" for bang is common outside the United States. See also attoparsec, calculator, chemist, console jockey, fish, go-faster stripes, grunge, hakspek, heavy metal, leaky heap, lord high fixer, loose bytes, muddie, nadger, noddy, psychedelicware, plingnet, raster blaster, RTBM, seggie, spod, sun lounge, terminal junkie, tick-list features, weeble, weasel, YABA, and notes or definitions under Bad Thing, barf, bum, chase pointers, cosmic rays, crippleware, crunch, dodgy, gonk, hamster, hardwarily, mess-dos, nibble, proglet, root, SEX, tweak and xyzzy.
- cut the gordian knot — to find a quick, bold solution for a perplexing problem
- cylinder head gasket — (in an automobile engine) a gasket placed between the cylinder and the cylinder heads to avoid leaks of coolant and compression
- frame check sequence — (communications) (FCS) The extra characters added to a frame for error detection and correction(?). FCS is used in X.25, HDLC, Frame Relay, and other data link layer protocols.
- frosting on the cake — a sweet mixture, cooked or uncooked, for coating or filling cakes, cookies, and the like; icing.
- get one's hackles up — to become tense with anger; bristle
- honeysuckle ornament — anthemion.
- japanese honeysuckle — a climbing honeysuckle, Lonicera japonica, introduced into the eastern U.S. from Asia, having fragrant, white flowers that fade to yellow.
- jerk someone's chain — to tease, mislead, or harass someone
- juno and the paycock — a play (1924) by Sean O'Casey.
- king charles spaniel — a variety of the English toy spaniel having a black-and-tan coat.
- knock the tar out of — any of various dark-colored viscid products obtained by the destructive distillation of certain organic substances, as coal or wood.
- near-market research — scientific research that, while not linked to the development of a specific product, is likely to be commercially exploitable
- no lack of something — If you say there is no lack of something, you are emphasizing that there is a great deal of it.
- off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.
- punch a (time) clock — to insert a timecard into a time clock when coming to or going from work
- ring-necked pheasant — a gallinaceous Asian bird, Phasianus colchicus, having a white band around its neck, introduced into Great Britain, North America, and the Hawaiian Islands.
- rocky mountain sheep — bighorn.
- season ticket holder — a person who has a season ticket
- second-hand bookshop — a shop selling second-hand books
- 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.
- skating championship — a competition for ice-skating
- synchronized skating — the art or sport of teams of up to twenty skaters holding onto each other and moving in patterns in time to music
- take to the cleaners — a person who cleans, especially one whose regular occupation is cleaning offices, buildings, equipment, etc.
- to stick in the craw — to be unacceptable or displeasing to someone
- tom, dick, and harry — the ordinary person; people generally; everyone: They invited every Tom, Dick, and Harry to the party.
- track-laying vehicle — A track-laying vehicle is a vehicle whose wheels run inside a continuous chain or track.
- 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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