Open English Wordnet
Nouns
(n)crestthe top line of a hill, mountain, or wave (n)peak, crown, crest, top, tip, summitthe top or extreme point of something (usually a mountain or hill)“the view from the peak was magnificent”,
“they clambered to the tip of Monadnock”,
“the region is a few molecules wide at the summit” (n)crest(heraldry) in medieval times, an emblem used to decorate a helmet (n)cresta showy growth of e.g. feathers or skin on the head of a bird or other animal Verbs
(v)cap, crestlie at the top of“Snow capped the mountains” (v)crestreach a high point“The river crested last night”