1 Eccl. = TERCE.
2 Mus. an interval of two octaves and a major third.
3 a sequence of three cards.
4 Fencing a the third of eight parrying positions. b the corresponding thrust.
5 archaic a a former wine-measure of one-third of a pipe. b a cask containing a certain quantity (varying with the goods) esp. of provisions.
Etymology: ME f. OF t(i)erce f. L tertia fem. of tertius third
Useful english dictionary. 2012.