Source : Webster's Revised Unabridged Dictionary (1913)

Libidinous \Li*bid"i*nous\ (-n[u^]s), a. [L. libidinosus, fr.
   libido, libidinis, pleasure, desire, lust, fr. libet, lubet,
   it pleases: cf. F. libidineux. See {Lief}.]
   Having lustful desires; characterized by lewdness; sensual;
   lascivious. -- {Li*bid"i*nous*ly}, adv. --
   {Li*bid"i*nous*ness}, n.

   Syn: Lewd; lustful; lascivious; unchaste; impure; sensual;
        licentious; lecherous; salacious.

Source : WordNet®

libidinous
     adj : driven by lust; preoccupied with or exhibiting lustful
           desires; "libidinous orgies" [syn: {lascivious}, {lewd},
            {lustful}]