#1 fasten v. [fix, secure] cause to be firmly attached; "fasten the lock onto the door"; "she fixed her gaze on the man". wn
#2 fasten v. become fixed or fastened; "This dress fastens in the back". wn
#3 fasten v. attach to; "They fastened various nicknames to each other". wn
#4 fasten v. [tighten] make tight or tighter; "Tighten the wire". wn
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