crest definition: 1. the top or highest part of something such as a wave or a hill: 2. a growth of feathers, fur, or…. the top or highest part of something such as a wave or a hill : the crest of a hill / wave a growth of feathers, fur, or skin along the top of the heads of some animals a decoration, usually made of … 3. the top, highest point, or highest stage of something. 2 : the highest part or point of something the crest of the wave the crest of a hill. Anatomy.

crest in British English. 1. a tuft or growth of feathers, fur, or skin along the top of the heads of some birds, reptiles, and other animals. 3 : an emblem or design …

a ridge or other prominence on any … Heraldry. 1 : a showy growth (as of flesh or feathers) on the head of an animal. ‘The iliac crest bone marrow biopsy is the gold standard for detecting of bone marrow metastases in small cell lung cancer.’ ‘The standard procedure consists of an iliac crest bone graft.’ ‘The bone can also be taken from several places, commonest being the iliac crest (pelvic bone).’ Kids Definition of crest. a ridge, especially on a bone. (krɛst ) noun. 2. something resembling or suggesting this. Learn more. a figure borne above the escutcheon in an achievement of arms, either on a helmet or by itself as a distinguishing device.