GYRON Meaning of GYRON in English [ 'dʒʌɪr(ə)n ]■ noun Heraldry a triangular ordinary formed by two lines from the edge of the shield meeting at the fess point at 45 degrees.OriginC16: from OFr. giron 'gusset'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004