A coronet is a small crown. a small crown worn by princes or other members of a royal family, especially on formal occasions (coronete, from corone; CROWN)
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
A headdress, often of metal and/or jewels, worn to indicate a certain rank The Coronet can be used to refer to a Prince and Princess jointly, and Coronet is also sometimes used to refer to Coronet Tournament
The institution of Royalty in a Principality (See Crown ) The circlet worn by a Prince, Princess, or Royal Peer, or -- in some areas -- a Baron or Baroness