CREST, noun [Latin This is probably, a growing or shooting up, from the root of cresco.]

1. The plume of feathers or other material on the top of the ancient helmet; the helmet itself.

2. The ornament of the helmet in heraldry.

3. The comb of a cock; also, a tuft of feathers on the head of other fowls.

4. Any tuft or ornament worn on the head.

5. Loftiness; pride; courage; spirit; a lofty mien.

CREST, verb transitive

1. To furnish with a crest; to serve as a crest for.

2. To mark with long streaks.