The Collaborative International Dictionary of English v.0.48:

Mint \Mint\ (m[i^]nt), n. [AS. minte, fr. L. mentha, Gr. mi`nqa,
   mi`nqh.] (Bot.)
   The name of several aromatic labiate plants, mostly of the
   genus Mentha, yielding odoriferous essential oils by
   distillation. See Mentha.
   [1913 Webster]

   Note:

   Corn mint is Mentha arvensis.

   Horsemint is Mentha sylvestris, and in the United States
      Monarda punctata, which differs from the true mints in
      several respects.

   Mountain mint is any species of the related genus
      Pycnanthemum, common in North America.

   Peppermint is Mentha piperita.

   Spearmint is Mentha viridis.

   Water mint is Mentha aquatica.
      [1913 Webster]

   Mint camphor. (Chem.) See Menthol.

   Mint julep. See Julep.

   Mint sauce, a sauce flavored with spearmint, for meats.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Water mint \Wa"ter mint`\
   A kind of mint (Mentha aquatica) growing in wet places, and
   sometimes having a perfume resembling bergamot.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bergamot \Ber"ga*mot\ (b[~e]r"g[.a]*m[o^]t), n. [F. bergamote,
   fr. It. bergamotta; prob. a corruption of Turk. beg arm[=u]di
   a lord's pear.]
   1. (Bot.)
      (a) A tree of the Orange family (Citrus bergamia),
          having a roundish or pear-shaped fruit, from the rind
          of which an essential oil of delicious odor is
          extracted, much prized as a perfume. Also, the fruit.
      (b) A variety of mint (Mentha aquatica, var. glabrata).
          [1913 Webster]

   2. The essence or perfume made from the fruit.
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   3. A variety of pear. --Johnson.
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   4. A variety of snuff perfumed with bergamot.
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            The better hand . . . gives the nose its bergamot.
                                                  --Cowper.
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   5. A coarse tapestry, manufactured from flock of cotton or
      hemp, mixed with ox's or goat's hair; -- said to have been
      invented at Bergamo, Italy. Encyc. Brit.
      [1913 Webster]

   Wild bergamot (Bot.), an American herb of the Mint family
      (Monarda fistulosa).
      [1913 Webster]
      [1913 Webster]

WordNet (r) 3.0 (2006):

Mentha aquatica
    n 1: a European mint that thrives in wet places; has a perfume
         like that of the bergamot orange; naturalized in eastern
         North America [syn: water-mint, water mint, Mentha
         aquatica]