dump (v.)youdaoicibaDictYouDict[dump 词源字典]
early 14c., "throw down or fall with force," perhaps from a Scandinavian source (compare Danish dumpe, Norwegian dumpa "to fall suddenly"). The sense of "unload en masse" is first recorded in American English 1784. That of "discard, abandon" is from 1919. Related: Dumped; dumping. Dump truck is from 1930.[dump etymology, dump origin, 英语词源]
dump (n.)youdaoicibaDictYouDict
"place where refuse is dumped," 1865, originally of mining operations, from dump (v.). Meaning "any shabby place" is from 1899. Meaning "act of defecating" is from 1942.
dumpling (n.)youdaoicibaDictYouDict
c. 1600, Norfolk dialect, of uncertain origin, perhaps from some Low German word or from noun dump "lump" (late 18c.). Related: Dumplings.
dumps (n.)youdaoicibaDictYouDict
"low spirits," 1520s, plural of dumpe "a fit of musing," possibly from Dutch domp "haze, mist," from Middle Dutch damp "vapor" (see damp (n.)).
Dumpster (n.)youdaoicibaDictYouDict
1930s, from Dempster-Dumpster trash-hauling mechanism, patented by Dempster Brothers and probably named from dump (v.) with the surname in mind. Dumpster diving attested from 1979.
dumpy (adj.)youdaoicibaDictYouDict
"short and stout," 1750, apparently from some noun dump (compare dumpling), but the connection is unclear.
dun (v.)youdaoicibaDictYouDict
"to insist on payment of debt," 1620s, perhaps related to dunnen "to sound, resound, make a din" (c. 1200, dialectal variant of din), or shortened from dunkirk (c. 1600) "privateer," a private vessel licensed to attack enemy ships during wartime, from Dunkirk, French port from which they sailed. The oldest theory traces it to a Joe Dun, supposedly a London bailiff famous for catching defaulters. Related: Dunned; dunning. As a noun from 1620s.
dun (adj.)youdaoicibaDictYouDict
Old English dunn "dingy brown, dark-colored," perhaps from Celtic (compare Old Irish donn "dark;" Gaelic donn "brown, dark;" Welsh dwnn "brownish"), from PIE *donnos, *dusnos "dark."
DuncanyoudaoicibaDictYouDict
from Gaelic donn "brown, dark" (see dun (adj.)) + ceann "head."
dunce (n.)youdaoicibaDictYouDict
"dullard," 1570s, from earlier Duns disciple "follower of John Duns Scotus" (c. 1265-1308), Scottish scholar of philosophy and theology supposed to have been born at Duns in Berwickshire. By 16c., humanist reaction against medieval theology singled him out as the type of the hairsplitting scholastic. It became a general term of reproach applied to more conservative philosophical opponents by 1520s, later extended to any dull-witted student.
dunderhead (n.)youdaoicibaDictYouDict
1620s, from head (n.); the first element is obscure; perhaps from Middle Dutch doner, donder "to thunder" (compare blunderbuss).
dundrearies (n.)youdaoicibaDictYouDict
1867, long, flowing whiskers, like those worn by actor E.A. Sothern (1826-1881) while playing Lord Dundreary, witless, indolent chief character in English dramatist Tom Taylor's play "Our American Cousin" (1858).
dune (n.)youdaoicibaDictYouDict
1790, from French, Middle Dutch or Middle Low German dune, all perhaps from Gaulish *dunom (thus related to down (n.2)). The French dune "sand hill" (13c.) is held by Diez to be an Old French borrowing from Dutch duin or some other Germanic source. Italian and Spanish duna are from French. Dune buggy attested by 1965.
dung (n.)youdaoicibaDictYouDict
Old English dung "manure, fertilizer," common Germanic (cognates: Old Frisian and Old Saxon dung "manure;" Old High German tunga "manuring," tung "underground room covered with manure;" German Dung; Old Norse dyngja "heap of manure, women's apartment; Swedish dynga "dung, muck;" Danish dynge "heap, mass, pile"), perhaps from a PIE *dhengh- "covering" (cognates: Lithuanian dengti "to cover," Old Irish dingim "I press").

The word recalls the ancient Germanic custom (reported by Tacitus) of covering underground shelters with manure to keep in warmth in winter. The meaning "animal excrement," whether used as fertilizer or not, is from late 13c.
The whole body of journeymen tailors is divided into two classes, denominated Flints and Dungs: the former work by the day and receive all equal wages; the latter work generally by the piece [1824].
Dung beetle attested by 1630s. In colloquial American English, tumble-bug. An Old English word for it was tordwifel "turd weevil."
dungareeyoudaoicibaDictYouDict
1610s, dongerijns, from Hindi dungri "coarse calico," from the name of a village, now one of the quarters of Bombay.
dungarees (n.)youdaoicibaDictYouDict
trousers made of dungaree, 1868.
dungeon (n.)youdaoicibaDictYouDict
c. 1300, "great tower of a castle," from Old French donjon "great tower of a castle" (12c.), from Gallo-Roman *dominionem, from Late Latin dominium, from Latin dominus "master" (of the castle; see domain). Sense of "castle keep" led to "strong (underground) cell" in English early 14c. The original sense went with the variant donjon.
dunghill (n.)youdaoicibaDictYouDict
early 14c., from dung + hill (n.).
dunk (v.)youdaoicibaDictYouDict
1919, American English, from Pennsylvania German dunke "to dip," from Middle High German dunken, from Old High German dunkon, thunkon "to soak," from PIE root *teng- "to soak" (see tincture).

Basketball sense is first recorded 1937 as a verb, 1971 as a noun (earlier dunk shot). German-American Anabaptist sect of Dunkers (who baptize with triple immersion) first recorded by that name 1756.
DunkirkyoudaoicibaDictYouDict
city on the northeast coast of France, French dunkerque, literally "dune church," from Middle Dutch dune (see dune) + kerke (see church (n.)); in reference to the 7c. church of St. Eloi.