n. [ F. tierce a third, from tiers, tierce, third, fr. L. tertius the third; akin to tres three. See Third, Three, and cf. Terce, Tercet, Tertiary. ]
[ 1913 Webster ]
a. [ F. ] (Her.) Divided into three equal parts of three different tinctures; -- said of an escutcheon. [ 1913 Webster ]
n. [ Cf. F. tierce majeure. ] (Card Playing) See Tierce, 4. [ 1913 Webster ]
n. [ F. tercet. See Tercet. ] (Pros.) A triplet; three lines, or three lines rhyming together. [ 1913 Webster ]