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latch on
Definition of latch on
British, informal
: to begin to understand something What he was saying was complicated, so it took me a while to latch on.
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latchplay
: any of various devices in which mating mechanical parts engage to fasten but usually not to lock something:
: a fastener (as for a door) consisting essentially of a pivoted bar that falls into a notch
: a fastener (as for a door) in which a spring slides a bolt into a hole
: to make fast with or as if with a latch
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