Answer: gyron

AnswerCrossword Clue
GYRONTriangular charge: Her.
GYRONDevice on a coat of arms
GYRONHeraldic charge
GYRONTriangular shape in heraldry
gyrona heraldic inverted vee, also GIRON
gyronsubordinary having the form of a triangle, usually equal to half a quarter of the escutcheon, with its apex at the fess point