thumb latch meaning

noun
  A latch worked by pressure of the thumb

[Architecture]

A lift latch for securing a door in a closed position, usually by means of a flat bar that falls into a catch when pressed by the thumb; for example, see Norfolk latch and Suffolk latch.

• lift latch, thumb latch:    [Architecture]A ty ...
• latch:    Verb: latch & ...
• latch on:    Verb: latch onTake ...

Examples

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1. A few original wrought iron thumb latches remain in the doors.
2. Two original paneled doors with thumb latches lead into the other rooms.
3. Many doors are original, with one having an original thumb latch.
4. Replace thumb latches on windows with keyed locks.
5. The ceilings are low, the floorboards wide, and the doors equipped with thumb latches.