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