You can't top this (5)
I believe the answer is:
limit
(Other definitions for limit that I've seen before include "Constrain" , "Confine within bounds" , "Cutoff point" , "Constraint" , "Restrict - boundary" .)
I believe the answer is:
limit
(Other definitions for limit that I've seen before include "Constrain" , "Confine within bounds" , "Cutoff point" , "Constraint" , "Restrict - boundary" .)