The Collaborative International Dictionary of English v.0.48:

Amorous \Am"o*rous\, a. [OF. amoros, F. amoreux, LL. amorosus,
   fr. L. amor love, fr. amare to love.]
   1. Inclined to love; having a propensity to love, or to
      sexual enjoyment; loving; fond; affectionate; as, an
      amorous disposition.
      [1913 Webster]

   2. Affected with love; in love; enamored; -- usually with of;
      formerly with on.
      [1913 Webster]

            Thy roses amorous of the moon.        --Keats.
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            High nature amorous of the good.      --Tennyson.
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            Sure my brother is amorous on Hero.   --Shak.
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   3. Of or relating to, or produced by, love. "Amorous
      delight." --Milton. "Amorous airs." --Waller.
      [1913 Webster]

   Syn: Loving; fond; tender; passionate; affectionate; devoted;
        ardent.
        [1913 Webster]

WordNet (r) 3.0 (2006):

amorous
    adj 1: inclined toward or displaying love; "feeling amorous"
           [syn: amative, amorous]
    2: expressive of or exciting sexual love or romance; "her
       amatory affairs"; "amorous glances"; "a romantic adventure";
       "a romantic moonlight ride" [syn: amatory, amorous,
       romantic]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "amorous":
   amative, amatory, aphrodisiac, ardent, carnal, desirous, enamored,
   erogenic, erogenous, erotic, erotogenic, fleshly, gamic,
   heterosexual, impassioned, infatuated, lascivious, libidinal,
   loverlike, loverly, lustful, nuptial, oversexed, passionate,
   potent, procreative, sensual, sex, sexed, sexlike, sexual, sexy,
   straight, undersexed, venereal, voluptuous