- clock
- 1371, clokke, orig. "clock with bells," probably from M.Du. klocke, from M.L. (7c.) clocca "bell," from Celt., probably spread by Irish missionaries, ultimately of imitative origin. Replaced O.E. dægmæl, from dæg "day" + mæl "measure, mark." The slang verb sense of "hit, sock" is 1941, originally Australian, probably from earlier slang clock (n.) "face" (1923). O'clock for of the clock is c.1720.