tierce

nouns

the third canonical hour; about 9 a.m.
terce, tierce
the cardinal number that is the sum of one and one and one
3, III, deuce-ace, leash, tercet, ternary, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, trio, triplet, troika
one of three equal parts of a divisible whole
"it contains approximately a third of the minimum daily requirement"
one-third, third, tierce