D defs.my
Entry 1 sense Webster, 1913

Costumer

/(-t?m`?r)/ · Cos·tum·er · IPA /ˈkɑstumɚ/
01 n. One who makes or deals in costumes, as for theaters, fancy balls, etc.
  1. 1.
    One who makes or deals in costumes, as for theaters, fancy balls, etc.