资料来源 : pyDict

车轴草,三叶形

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

Trefoil \Tre"foil\, n. [L. tres three + E. foil leaf; cf. F.
   fr[`e]fle, It. trifoglio, L. trifolium. See {Tri-}, {Foil}
   leaf, and cf. {Trifoly}.]
   1. (Bot.) Any plant of the genus {Trifolium}, which includes
      the white clover, red clover, etc.; -- less properly,
      applied also to the nonesuch, or black medic. See
      {Clover}, and {Medic}.

   2. (Arch.) An ornamental foliation consisting of three
      divisions, or foils.

   3. (Her.) A charge representing the clover leaf.

资料来源 : WordNet®

trefoil
     n 1: any of several Old World herbs of the genus Medicago having
          small flowers and trifoliate compound leaves [syn: {medic},
           {medick}]
     2: a plant of the genus Trifolium [syn: {clover}]
     3: an architectural ornament in the form of three arcs arranged
        in a circle