[1] : The Collaborative International Dictionary of English v.0.48

tierc'e \tierc'e"\, a. f. her.
   divided into three equal parts of three different tinctures;
   -- said of an escutcheon.
   1913 webster tiercel

[2] : The Collaborative International Dictionary of English v.0.48

tierce \tierce\, n. f. tierce a third, from tiers, tierce,
   third, fr. l. tertius the third; akin to tres three. see
   third, three, and cf. terce, tercet, tertiary.
   1. a cask whose content is one third of a pipe; that is,
      forty-two wine gallons; also, a liquid measure of
      forty-two wine, or thirty-five imperial, gallons.
      1913 webster

   2. a cask larger than a barrel, and smaller than a hogshead
      or a puncheon, in which salt provisions, rice, etc., are
      packed for shipment.
      1913 webster

   3. mus. the third tone of the scale. see mediant.
      1913 webster

   4. a sequence of three playing cards of the same suit. tierce
      of ace, king, queen, is called tierce-major.
      1913 webster

   5. fencing a position in thrusting or parrying in which the
      wrist and nails are turned downward.
      1913 webster

   6. r. c. ch. the third hour of the day, or nine a. m,; one
      of the canonical hours; also, the service appointed for
      that hour.
      1913 webster
      1913 webster
see also:
third three terce tercet tertiary mediant 

[3] : WordNet (r) 2.0

tierce
     n 1: the third canonical hour; about 9 a.m. syn: terce
     2: the cardinal number that is the sum of one and one and one
        syn: three, 3, iii, trio, threesome, leash, troika,
         triad, trine, trinity, ternary, ternion, triplet,
         tercet, terzetto, trey, deuce-ace
     3: one of three equal parts of a divisible whole; "it contains
        approximately a third of the minimum daily requirement"
        syn: one-third, third
see also:
terce three 3 iii trio threesome 
leash troika triad trine trinity 
ternary ternion triplet tercet terzetto 
trey deuce-ace one-third third 

[4] : Bouvier's Law Dictionary, Revised 6th Ed (1856)

tierce, measures. a liquid measure containing the third part of a pipe, or 
forty-two gallons. 

Tierce >> T Words
Tierce, definition of term: Tierce
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