Source : Webster's Revised Unabridged Dictionary (1913)

Friday \Fri"day\, n. [AS. friged[ae]g, fr. Frigu, the gooddes of
   marriage; friqu love + d[ae]g day; cf. Icel. Frigg name of a
   goddess, the wife of Odin or Wodan, OHG. Fr[=i]atag, Icel.
   Frj[=a]dagr. AS. frigu is prob. from the root of E. friend,
   free. See {Free}, and {Day}.]
   The sixth day of the week, following Thursday and preceding
   Saturday.

Source : WordNet®

Friday
     n : the sixth day of the week; the fifth working day [syn: {Fri}]