Source : Webster's Revised Unabridged Dictionary (1913)

Gala \Ga"la\, n. [F. gala show, pomp, fr. It. gala finery, gala;
   of German origin. See {Gallant}.]
   Pomp, show, or festivity. --Macaulay.

   {Gala day}, a day of mirth and festivity; a holiday.