What meaning of crest?

Answer 1

A tuft, or other excrescence or natural ornament, growing on an animal's head; the comb of a cock; the swelling on the head of a serpent; the lengthened feathers of the crown or nape of bird, etc., The plume of feathers, or other decoration, worn on a helmet; the distinctive ornament of a helmet, indicating the rank of the wearer; hence, also, the helmet., A bearing worn, not upon the shield, but usually above it, or separately as an ornament for plate, liveries, and the like. It is a relic of the ancient cognizance. See Cognizance, 4., The upper curve of a horse's neck., The ridge or top of a wave., The summit of a hill or mountain ridge., The helm or head, as typical of a high spirit; pride; courage., The ornamental finishing which surmounts the ridge of a roof, canopy, etc., The top line of a slope or embankment., To furnish with, or surmount as, a crest; to serve as a crest for., To mark with lines or streaks, like, or regarded as like, waving plumes., To form a crest.