Source : Webster's Revised Unabridged Dictionary (1913)

Fabliau \Fa`bli`au"\, n.; pl. {Fabliaux} (-[-o]"). [F., fr. OF.
   fablel, dim. of fable a fable.] (Fr. Lit.)
   One of the metrical tales of the Trouv[`e]res, or early poets
   of the north of France.