The Collaborative International Dictionary of English v.0.48:
Kibosh \Ki"bosh\, n. 1. Nonsense; stuff; also, fashion; style. [Slang] [Webster 1913 Suppl.] 2. Portland cement when thrown or blown into the recesses of carved stonework to intensify the shadows. To put the kibosh on, to dispose of; to squelch; to terminate; put an end to; to do for. [Slang] [Webster 1913 Suppl. +PJC]