I.
noun
VERB + CREST
▪ reach
▪
We finally reached the ~ of the ridge.
PREPOSITION
▪ on a/the ~
▪
We stood on the ~ of the hill.
PHRASES
▪ ride the ~ of sth ( figurative )
▪
The group were riding the ~ of popularity ( = were enjoying great popularity ).
▪
They are riding the ~ of the wave at the moment.
II.
verb
Crest is used with these nouns as the object: ↑ hill