Definition of pin lock in English:

pin lock

noun

  • A lock having or operated by a pin; specifically (a) a lock having a pin on to which the hollow shank of a key fits; (b) a lock operated by a pin which, when inserted, prevents the opening of a sliding door or window.

Origin

Mid 19th century; earliest use found in Scientific American. From pin + lock.

Pronunciation

pin lock

/ˈpɪn lɒk/