- whatchamacallit (n.)
[whatchamacallit 词源字典]
- 1928, compressed form of phrase "what you may call it." What-do-you-call-it is from 1630s. Earliest recorded variant is what-calle-ye-hym, attested from late 15c. What's-his-name for "unspecified person" is attested from 1690s; variant what's-his-face is first recorded 1967.[whatchamacallit etymology, whatchamacallit origin, 英语词源]