Conk/conk out

Origin of: Conk/conk out

Conk/conk out

British slang for nose, especially a large one, and is first attested from 1812. The origin is not known, but the OED says it probably derives from the word conch meaning a large seashell. Conk out is to fail or give out, as in a car engine ‘conking out’ and dates from 1918, The origin is unknown.