Definitions
1.verbParticularly with reference to waves, to reach a peak.
2.verbTo reach the crest of (a hill or mountain)
3.verbTo furnish with, or surmount as, a crest; to serve as a crest for.
4.verbTo mark with lines or streaks like waving plumes.
5.adjectiveHaving a crest, or ornamental tuft (on an animal) or plume (on a helmet).