from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A lock in which the bolt shoots automatically by means of a spring.
from the GNU version of the Collaborative International Dictionary of English
- n. a lock that fastens with a spring.
from The Century Dictionary and Cyclopedia
- n. A lock which fastens itself automatically by a spring when the door or lid to which it is attached is shut. Also called latch-lock.
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