Dictionary definition · crest
noun
- the top line of a hill, mountain, or wave
- the top or extreme point of something (usually a mountain or hill)"the view from the peak was magnificent"
- the center of a cambered road
- (heraldry) in medieval times, an emblem used to decorate a helmet
- a showy growth of e.g. feathers or skin on the head of a bird or other animal
verb
- lie at the top of"Snow capped the mountains"
- reach a high point"The river crested last night"
Source: Open English WordNet (CC BY 4.0).