英语词源字典 - 在线词源网站

backside (n.)[backside 词源字典]: c. 1400, from back (adj.) + side (n.). In the specific sense of "rump, buttocks" it is first recorded c. 1500.[backside etymology, backside origin, 英语词源]
backslash (n.): 1982, new punctuation symbol introduced for computer purposes, from back (adj.) + slash (n.).
backslide (v.): in the religious sense, 1580s, from back (adj.) + slide (v.). Related: Backslider; backsliding (1550s).
backspace (adj.): also back-space, 1899, in reference to keyboarding, from back (adv.) + space.
We have had the pleasure of examining one of the 1899 model Hammond typewriters, with the new back-space key. This new feature is certainly an improvement in the machine. ["The Phonetic Journal," March 11, 1899]
backstabber (n.): also back-stabber, in the figurative sense, 1839, from back (n.) + agent noun from stab (v.). The verb backstab in the figurative sense is from 1925.
backstage: also back-stage, 1898, from back (adj.) + stage (n.).
backstairs: "stairs at the back of a structure," 1650s, from back (adj.) + stairs (see stair). Figurative use is attested earlier (1640s).
backstop (n.): 1819, in cricket, from back (adj.) + stop (n.). In U.S. baseball, from 1889, "fence behind the catcher;" figurative extension to "catcher on a baseball team" is from 1890. The verb is attested from 1956 in the sense of "support." Related: Backstopped; backstopping.
backstory (n.): c. 1990, from background story.
backstreet (n.): mid-15c., from back (adj.) + street.
backstroke (n.): 1670s, "counter-punch," from back (adj.) + stroke (n.). From 1876 in swimming, from back (n.).