Source : Webster's Revised Unabridged Dictionary (1913)

Ribaldry \Rib"ald*ry\, n. [OE. ribaldrie, ribaudrie, OF.
   ribalderie, ribauderie.]
   The talk of a ribald; low, vulgar language; indecency;
   obscenity; lewdness; -- now chiefly applied to indecent
   language, but formerly, as by Chaucer, also to indecent acts
   or conduct.

         The ribaldry of his conversation moved ?stonishment
         even in that age.                        --Macaulay.

Source : WordNet®

ribaldry
     n 1: ribald humor
     2: behavior or language bordering on indelicacy [syn: {gaminess},
         {raciness}, {spiciness}]