rim lock

English

Noun

rim lock (plural rim locks)

  1. A lock and plate fixed to the surface of a door rather than morticed within the door.
    • 1951, John Wyndham, The Day of the Triffids, Harmondsworth: Penguin Books, published 1954, page 82:
      The socket of the rim-lock tore off to one good heft of the shoulder, and we were in.