#1 widen v. become broader or wider or more extensive; "The road widened". wn
#2 widen v. [let out] make (clothes) larger; "Let out that dress--I gained a lot of weight". wn
#3 widen v. make wider; "widen the road". wn
#4 widen v. [broaden, extend] extend in scope or range or area; "The law was extended to all citizens"; "widen the range of applications"; "broaden your horizon"; "Extend your backyard". wn
vizzz