kick off[ kik-awf, -of ]SEE DEFINITION OF kick off
late 14c., "to strike out with the foot" (earliest in biblical phrase now usually rendered as kick against the pricks), of uncertain origin, perhaps from Old Norse kikna "bend backwards, sink at the knees." "The doubts OED has about the Scandinavian origin of kick are probably unfounded" [Liberman]. Related: Kicked; kicking.
Figurative sense of "complain, protest, rebel against" (late 14c.) probably is from the Bible verse. Slang sense of "die" is attested from 1725 (kick the wind was slang for "be hanged," 1590s; see also bucket). Meaning "to end one's drug habit" is from 1936. Kick in "contribute" is from 1908; kick out "expel" is from 1690s. To kick oneself in self-reproach is from 1891. The children's game of kick the can is attested from 1891.