(of a shield) divided into three sections of similar size but different colour
tierced in American English
(tɪərst)
adjective
Heraldry(of an escutcheon)
divided vertically or horizontally into three equal parts
Word origin
[1795–1805; tierce + -ed3; cf. F tiercé]This word is first recorded in the period 1795–1805. Other words that entered Englishat around the same time include: baseball, crunch, mannerism, sharpshooter, unilateral-ed is a suffix forming adjectives from nouns. Other words that use the affix -ed include: bearded, monied, tender-hearted