costum

n. [ F. costume, It. costume custom, dress, fr. L. consuetumen (not found), for consuetudo custom. See Custom, and cf. Consuetude. ] 1. Dress in general; esp., the distinctive style of dress of a people, class, or period. [ 1913 Webster ]

2. Such an arrangement of accessories, as in a picture, statue, poem, or play, as is appropriate to the time, place, or other circumstances represented or described. [ 1913 Webster ]

I began last night to read Walter Scott's Lay of the Last Minstrel . . . .I was extremely delighted with the poetical beauty of some parts . . . .The costume, too, is admirable. Sir J. Mackintosh. [ 1913 Webster ]

3. A character dress, used at fancy balls or for dramatic purposes. [ 1913 Webster ]