tierce 
(tîrs)
(tîrs)n.
1. Variant of terce.
2. A measure of liquid capacity, equal to a third of a pipe, or 42 gallons (159 liters).
3. Games A sequence of three cards of the same suit.
4. Sports The third position from which a parry or thrust can be made in fencing.
5. Music An interval of a third.
[Middle English, from Old French, from feminine of tiers, third, from Latin tertius; see trei- in the Appendix of Indo-European roots.]
- groundcover
- ground crew
- ground-effect machine
- grounder
- ground fault
- ground-fault interrupter
- groundfish
- ground floor
- ground glass
- ground hemlock
- groundhog
- ground hog
- Groundhog Day
- ground ivy
- groundkeeper
- groundkeeper
- groundless
- groundlessly
- groundlessness
- ground level
- groundling
- ground loop
- groundmass
- ground meristem
- groundnut