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

Triple \Tri"ple\, a. [L. triplus; tri- (see {Tri-}) + -plus, as
   in duplus double: cf. F. triple. See {Double}, and cf.
   {Treble}.]
   1. Consisting of three united; multiplied by three;
      threefold; as, a triple knot; a triple tie.

            By thy triple shape as thou art seen. --Dryden.

   2. Three times repeated; treble. See {Treble}.

   3. One of three; third. [Obs.] --Shak.

   {Triple crown}, the crown, or tiara, of the pope. See
      {Tiara}, 2.

资料来源 : WordNet®

triple crown
     n 1: (horse racing) a title won by a horse that can win the
          Kentucky Derby and the Belmont Stakes and the Preakness
     2: (baseball) an unofficial title won by a batter who leads the
        league in hitting average and runs batted in and home runs