Un·latch v. i. [imp. & p. p. Unlatched p. pr. & vb. n. Unlatching.] To open or loose by lifting the latch; as, to unlatch a door.
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unlatched
adj : not firmly fastened or secured; "an unbarred door"; "went
through the unlatched gate into the street"; "an
unlocked room" [syn: unbarred, unbolted, unlocked,
unsecured]