1. (

• crest

) the top line of a hill, mountain, or wave ;

2. (

• peak ,
• crown ,
• crest ,
• top ,
• tip ,
• summit

) the 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" ;

3. (

• crown ,
• crest ,

) the center of a cambered road ;

4. (

• crest

) (heraldry) in medieval times, an emblem used to decorate a helmet ;

5. (

• crest

) a showy growth of e.g. feathers or skin on the head of a bird or other animal ;

1. (

• cap ,
• crest

) lie at the top of; "Snow capped the mountains" ;

2. (

• crest

) reach a high point; "The river crested last night" ;