Darwinism (n.)youdaoicibaDictYouDict[Darwinism 词源字典]
1864, from Charles Darwin (1809-1882), whose major works were "The Origin of Species" (1859) and "The Descent of Man" (1871), + -ism.[Darwinism etymology, Darwinism origin, 英语词源]
dash (v.)youdaoicibaDictYouDict
c. 1300, probably from a Scandinavian source (compare Swedish daska, Danish daske "to beat, strike"), somehow imitative. The oldest sense is that in dash to pieces and dashed hopes. Intransitive meaning "move quickly" appeared c. 1300, that of "to write hurriedly" is 1726. Related: Dashed; dashing.
dash (n.)youdaoicibaDictYouDict
late 14c., from dash (v.). Sporting sense is from 1881, originally "race run in one heat."
dashboard (n.)youdaoicibaDictYouDict
1846, from dash (v.) + board (n.1); "board in front of a carriage to stop mud from being splashed ("dashed") into the vehicle by the horse's hoofs." Of motor vehicles, from 1904.
dashiki (n.)youdaoicibaDictYouDict
1969, of West African origin.
dashing (adj.)youdaoicibaDictYouDict
1801, "given to cutting a dash" (1786), which was a colloquial expression for "acting brilliantly," from dash (n.) in the sense of "showy appearance," which is attested from 1715. The sense of "splashing" is recorded from mid-15c.
dastard (n.)youdaoicibaDictYouDict
mid-15c., "one who is lazy or dull;" an English formation on a French model, probably from *dast, "dazed," past participle of dasen "to daze" (see daze (v.)) + deprecatory suffix -ard. Meaning "one who shirks from danger" is late 15c.
dastardly (adj.)youdaoicibaDictYouDict
1560s, "showing despicable cowardice," originally "dull," from Middle English dastard + -ly (1).
datyoudaoicibaDictYouDict
representing the pronunciation of that in West Indian, Irish, or U.S. black speech, from 1680s.
data (n.)youdaoicibaDictYouDict
1640s, plural of datum, from Latin datum "(thing) given," neuter past participle of dare "to give" (see date (n.1)). Meaning "transmittable and storable computer information" first recorded 1946. Data processing is from 1954.
data base (n.)youdaoicibaDictYouDict
also database, attested from 1962, from data + base (n.).
date (n.1)youdaoicibaDictYouDict
"time," early 14c., from Old French date (13c.) "date, day; time," from Medieval Latin data, noun use of fem. singular of Latin datus "given," past participle of dare "to give, grant, offer," from PIE root *do- "to give" (cognates: Sanskrit dadati "gives," danam "offering, present;" Old Persian dadatuv "let him give," Old Church Slavonic dati "give," dani "tribute;" Latin donum "gift;" Greek didomi, didonai, "to give, offer," doron "gift;" Lithuanian duonis "gift," Old Irish dan "gift, endowment, talent," Welsh dawn "gift").

The Roman convention of closing every article of correspondence by writing "given" and the day and month -- meaning perhaps "given to messenger" -- led to data becoming a term for "the time (and place) stated." (a Roman letter would include something along the lines of datum Romae pridie Kalendas Maias -- "given at Rome on the last day of April."
date (n.3)youdaoicibaDictYouDict
"liaison," 1885, gradually evolving from date (n.1) in its general sense of "appointment;" romantic sense by 1890s. Meaning "person one has a date with" is from 1925.
date (n.2)youdaoicibaDictYouDict
the fruit, late 13c., from Old French date, from Old Provençal datil, from Latin dactylus, from Greek daktylos "date," originally "finger, toe;" so called because of fancied resemblance between oblong fruit of the date palm and human digits. Possibly from a Semitic source (compare Hebrew deqel, Aramaic diqla, Arabic daqal "date palm") and assimilated to the Greek word for "finger."
date (v.2)youdaoicibaDictYouDict
"have a romantic liaison;" 1902, from date (n.3). Related: Dated; dating.
date (v.1)youdaoicibaDictYouDict
"to mark (a document) with the date," late 14c., from date (n.1). Meaning "to assign to or indicate a date" (of an event) is from c. 1400. Meaning "to mark as old-fashioned" is from 1895. Related: Dated; dating.
date rape (n.)youdaoicibaDictYouDict
by 1973, from date (n.3) + rape (n.1).
dated (adj.)youdaoicibaDictYouDict
"old-fashioned," 1900, past participle adjective from date (v.1).
dateline (n.)youdaoicibaDictYouDict
1880, imaginary line down the Pacific Ocean on which the calendar day begins and ends, from date (n.1) + line (n.). Meaning "line of text that tells the date and place of origin of a newspaper, article, telegram, etc." is from 1888.
dative (adj.)youdaoicibaDictYouDict
mid-15c., from Latin dativus "pertaining to giving," from datus "given" (see date (n.1)); in grammatical use from Greek dotike (ptosis) "dative (case)," from dotikos "of giving nature," from dotos "given," from PIE root *do- "to give," from the same PIE root as the Latin word. In law, "that may be disposed of at pleasure," from 1530s. Typically the case of the indirect object, but sometimes also denoting "motion toward." In old Germanic languages, the "fourth case," catch-all for Indo-European dative, ablative, locative, and other cases.