Dictionary.net

the attire worn in a play or at a fancy dress ball; "he won the prize for best costume"

the attire characteristic of a country or a time or a social class; "he wore his national costume"

unusual or period attire not characteristic of or appropriate to the time and place; "in spite of the heat he insisted on his woolen costume"

the prevalent fashion of dress (including accessories and hair style as well as garments)

dress in a costume; "We dressed up for Halloween as pumpkins"

the attire worn in a play or at a fancy dress ball; "he won the prize for best costume"

the attire characteristic of a country or a time or a social class; "he wore his national costume"

unusual or period attire not characteristic of or appropriate to the time and place; "in spite of the heat he insisted on his woolen costume"

the prevalent fashion of dress (including accessories and hair style as well as garments)

characterized by the use of period costume or fancy dress; "a costume movie"; "a costume ball"

dress in a costume; "We dressed up for Halloween as pumpkins"

Dress in general; esp., the distinctive style of dress of a people, class, or period.

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.

Dress in general; style of dress; a dress for a woman; the dress of a given time, class, etc.

To dress in, or provide with, appropriate garments.

Costumer.

The manner of dressing prevalent at a particular period or place: dress.

Mode of dress; dress.

Dress, especially of a country, period, class, etc.

Style of dress; the mode of dress peculiar to any people, or nation, or age.

n. [French] [Latin] An established manner, mode, or style, especially of dress; —dress peculiar or appropriate, as to a nation, office, or character.