Coronet

Part of speech: noun (n.)

1. An ornamental or honorary headdress, having the shape and character of a crown; particularly, a crown worn as the mark of high rank lower than sovereignty. The word is used by Shakespeare to denote also a kingly crown. Without a star, a coronet, or garter. Goldsmith.

2. The upper part of a horse's hoof, where the horn terminates in skin. James White.

3. The iron head of a tilting spear; a coronel. Crose.