Source : Webster's Revised Unabridged Dictionary (1913)

Habitue \Ha`bi`tu`e"\, n. [F., p. p. of habituer. See
   {Habituate}.]
   One who habitually frequents a place; as, an habitu['e] of a
   theater.

Source : WordNet®

habitue
     n : a regular patron; "an habitue of the racetrack"; "a bum who
         is a Central Park fixture" [syn: {regular}, {fixture}]