\Crest"ed\ (kr[e^]st"[e^]d), a. 1. Having a crest. But laced crested helm. --Dryden. 2. (Zo["o]l.) Having a crest of feathers or hair upon the head. ``The crested bird.'' --Dryden. 3. (Bott.) Bearing any elevated appendage like a crest, as an elevated line or ridge, or a tuft. --Gray.