Open English Wordnet
Verbs
(v)widenbecome broader or wider or more extensive“The road widened” (v)let out, widenmake (clothes) larger“Let out that dress — I gained a lot of weight” (v)widenmake wider“widen the road” (v)widen, broaden, extendextend in scope or range or area“The law was extended to all citizens”,
“widen the range of applications”,
“broaden your horizon”,
“Extend your backyard”