Pronunciation: (tērs),[key] —n. 1. an old measure of capacity equivalent to one third of a pipe, or 42 wine gallons.
2. a cask or vessel holding this quantity.
3. Also,terce.Eccles.the third of the seven canonical hours, or the service for it, originally fixed for the third hour of the day (or 9 a.m.).
4. Fencing.the third of eight defensive positions.
5. Piquet.a sequence of three cards of the same suit, as an ace, king, and queen (tierce' ma'jor), or a king, queen, and jack (tierce' mi'nor). 6. Obs.a third or third part.