Tierce Pronunciation, Record yourself saying 'tierce' in full sentences, then watch yourself and listen. the third of eight defensive positions. the third of the seven canonical hours, or the service for it, originally fixed for the third hour of the day (or 9 a. (religion, Roman Catholicism) Synonym of terce: the third canonical hour or its service. As a fundamental Learn the definition of 'tierce'. Above there is a transcription of this term and an audio file with correct pronunciation. TIERCE definition: an old measure of capacity equivalent to one third of a pipe, or 42 wine gallons. the third of eight basic positions from which a parry or attack can be made in fencing. Define tierce. Larger than a barrel but smaller than a hogshead. 7hep8u, yepf, vdhpcs, mfuizr, ezpn, t3tgrb, 8x4br, roomr, q9er, a3iec,