资料来源 : pyDict

列,行,排,层,等级

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Tier \Ti"er\, n.
   One who, or that which, ties.

Tier \Ti"er\, n. [See {Tire} a headdress.]
   A chold's apron covering the upper part of the body, and tied
   with tape or cord; a pinafore. [Written also {tire}.]

Tier \Tier\, n. [Perhaps fr. OF. tire, F. tire; probably of
   Teutonic origin; cf. OHG. ziar[=i] ornament, G. zier, AS.
   t[=i]r glory, ti['e]r row, rank. But cf. also F. tirer to
   draw, pull; of Teutonic origin. Cf. {Attire}, v. t., {Tire} a
   headdress, but also {Tirade}.]
   A row or rank, especially one of two or more rows placed one
   above, or higher than, another; as, a tier of seats in a
   theater.

   {Tiers of a cable}, the ranges of fakes, or windings, of a
      cable, laid one within another when coiled.

资料来源 : WordNet®

tier
     n 1: a relative position or degree of value in a graded group;
          "lumber of the highest grade" [syn: {grade}, {level}]
     2: any one of two or more competitors who tie one another
     3: a worker who ties something [syn: {tier up}]
     4: something that is used for tying; "the sail is fastened to
        the yard with tiers"
     5: one of two or more layers one atop another; "tier upon tier
        of huge casks"; "a three-tier wedding cake"