Source : Webster's Revised Unabridged Dictionary (1913)

Slut \Slut\, n. [OE. slutte; cf. OD. slodde a slut, Icel.
   sl["o]ttr a heavy, loglike fellow, slota to droop.]
   1. An untidy woman; a slattern.

            Sluts are good enough to make a sloven's porridge.
                                                  --Old Proverb.

   2. A servant girl; a drudge. [Obs.]

            Our little girl Susan is a most admirable slut, and
            pleases us mightly, doing more service than both the
            others.                               --Pepys.

   3. A female dog; a bitch.

Source : WordNet®

slut
     n 1: a dirty untidy woman [syn: {slattern}, {slovenly woman}, {trollop}]
     2: a woman adulterer [syn: {adulteress}, {fornicatress}, {hussy},
         {jade}, {loose woman}, {strumpet}, {trollop}]