gorget

noun8

1. •
   (historical) A piece of armour protecting the throat and/or the upper part of the chest.

   • About his neck a threefold gorget, / As rough as trebled leathern target — 1662
2. •
   A crescent-shaped coloured patch on the neck of a bird or mammal.

   • There was […] the golden-winged woodpecker, with his crimson crest, his broad black gorget, and splendid plumage […] — 1917
3. •
   An ornament for the neck; a necklace, ornamental collar, torque etc.
4. •
   (historical) A crescent-shaped ornamental metal plate suspended around the neck from the crescent's points by a length of chain or ribbon, used to indicate rank or authority and was worn as part of a dress military uniform by officers.
5. •
   (historical) A type of women's clothing covering the neck and breast; a wimple.
6. •
   A cutting instrument used in lithotomy.
7. •
   A grooved instrument used in performing various operations; called also blunt gorget.
8. •
   (dialect, UK) A hake caught in a net set for other fish.