costumes is a form of:

Costume



noun
1.
(a style of clothes belonging to a particular place or period, a set of outer clothes) សំលៀកបំពាក់, គ្រឿងតែង, របៀបស្លៀកពាក់, សំលៀកបំពាក់របាំ, សំលៀកបំពាក់ក្លែង
verb
1.
(TRANSITIVE) (To provide with a costume) តែងកាយ, ស្លៀកពាក់ក្លែងកាយ
Example: A winter costume; traveling costume, Chinese costume; colonial costume.
ENGLISH MEANING
noun
1.
Dress in general; esp., the distinctive style of dress of a people, class, or period.
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.
3.
A character dress, used at fancy balls or for dramatic purposes.