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

horsemint \horse"mint`\, n. bot.
   a a coarse american plant of the mint family monarda
       punctata.
   b in england, the wild mint mentha sylvestris.
       1913 webster
see also:
monarda punctata mentha sylvestris 

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

mint \mint\ mi^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
see also:
mentha corn mint mentha arvensis horsemint mentha sylvestris monarda punctata 
mountain mint pycnanthemum peppermint mentha piperita spearmint 
mentha viridis water mint mentha aquatica mint camphor menthol 
mint julep julep mint sauce 

[3] : WordNet (r) 2.0

monarda punctata
     n : tall erect perennial or annual having lanceolate leaves and
         heads of purple-spotted creamy flowers; many subspecies
         grown from eastern to southwestern united states and in
         mexico syn: horsemint
see also:
horsemint 

Monarda >> M Words
Monarda, definition of term: Monarda
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