The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

         The ribaldry of his conversation moved ?stonishment
         even in that age.                        --Macaulay.
   [1913 Webster]

WordNet (r) 3.0 (2006):

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

Moby Thesaurus II by Grady Ward, 1.0:

84 Moby Thesaurus words for "ribaldry":
   Rabelaisianism, X-rated movie, bad language, bawdiness, bawdry,
   billingsgate, blue language, blue movie, coarseness,
   colorful language, crassness, crudeness, crudity, cursing, cussing,
   dirt, dirtiness, dirty language, dirty movie, dirty talk,
   dissoluteness, dysphemism, earthiness, erotic art,
   erotic literature, erotographomania, evil speaking, fescenninity,
   filth, filthiness, filthy language, foul language, foulness,
   gaudiness, grossness, iconolagny, immodesty, indecency, indelicacy,
   lasciviousness, lewdness, licentiousness, looseness, loudness,
   lubricity, lustfulness, meretriciousness, nastiness, naughtiness,
   obscenity, offensiveness, pornographic art,
   pornographic literature, pornographomania, pornography,
   profane swearing, profanity, raciness, rakishness, rankness,
   rascality, rawness, roughness, rudeness, salaciousness, salacity,
   scatology, scurrility, sexploitation, shamelessness, skin flick,
   smut, smuttiness, soft-core pornography, stag film,
   strong language, swearing, unparliamentary language,
   unrepeatable expressions, vile language, vileness, vulgar language,
   vulgarity, wantonness



The Devil's Dictionary (1881-1906):

RIBALDRY, n.  Censorious language by another concerning oneself.