takeoff (n.)youdaoicibaDictYouDict[takeoff 词源字典]
also take-off, "caricature," colloquial, 1846, from earlier sense of "thing that detracts from something, drawback" (1826), from take (v.) + off (adv.). Meaning "act of becoming airborne" is from 1904 in reference to aircraft; in reference to jumping, it is attested from 1869. Verbal phrase take off "become airborne" is from 1918, in reference to aircraft; figurative use "rise suddenly and dramatically" by 1963.[takeoff etymology, takeoff origin, 英语词源]