A tuft, or other natural ornament, growing on an animal's head, for example the comb of a cockerel, the swelling on the head of a snake, the lengthened feathers of the crown or nape of bird, etc.
The plume of feathers, or other decoration, worn on or displayed on a helmet; the distinctive ornament of a helmet.
(heraldry) A bearing worn, not upon the shield, but usually on a helmet above it, sometimes (as for clerics) separately above the shield or separately as a mark for plate, in letterheads, and the like.
I liked the man for his own sake, and even had he promised to turn out a celebrity it would have had no weight with me. I look upon notoriety with the same indifference as on the buttons on a man's shirt-front, or the crest on his note-paper.
(informal) A design or logo, especially one of an institution, sports club, association or high-class family.
2012 April 26, Tasha Robinson, “Film: Reviews: The Pirates! Band Of Misfits :”, in The Onion AV Club:
Hungry for fame and the approval of rare-animal collector Queen Victoria (Imelda Staunton), Darwin deceives the Captain and his crew into believing they can get enough booty to win the pirate competition by entering Polly in a science fair. So the pirates journey to London in cheerful, blinkered defiance of the Queen, a hotheaded schemer whose royal crest reads simply “I hate pirates.”