[{"Bold_text": "noun", "List Items": ["the highest part of a hill or mountain range; summit.", "the head or top of anything.", "a ridge or ridgelike formation.", "the foamy top of a wave.", "the point of highest flood, as of a river.", "the highest point or level; climax; culmination.", "a tuft or other natural growth on the top of the head of an , as the comb of a rooster.", "anything resembling or suggesting such a tuft.", "the ridge of the neck of a horse, dog, etc.", "the mane growing from this ridge.", "an ornament or heraldic device surmounting a helmet.", "a helmet.", "a ridge running from front to back along the top of a helmet; comb.", "Heraldry.a figure borne above the escutcheon in an achievement of arms, either on a helmet or by itself as a distinguishing device.", "Anatomy.a ridge, especially on a bone.", "a ridge or other prominence on any part of the body of an .", "Architecture.a cresting .", "Machinery.(in a screw or other threaded object) the ridge or surface farthest from the body of the object and defined by the flanks of the thread.Compare root1(def15a) root1(def15a)."]}, {"Bold_text": "verb (used with object)", "List Items": ["to furnish with a crest.", "to serve as a crest for; crown or top.", "to reach the crest or summit of (a hill, mountain, etc.)."]}, {"Bold_text": "verb (used without object)", "List Items": ["to form or rise to a crest, as a wave or river.", "to reach the crest or highest level:Interest in the project has crested."]}]