definition of
fasten

[1] #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] #2 fasten v. become fixed or fastened; "This dress fastens in the back". wn

[3] #3 fasten v. attach to; "They fastened various nicknames to each other". wn

[4] #4 fasten v. [tighten] make tight or tighter; "Tighten the wire". wn