noun
black clothes; black outfit
Refers to a set of black clothing, often associated with ninja or stagehands in traditional theater.
忍者は黒装束を着て夜の闇に紛れた。
The ninja wore black clothes and blended into the darkness of the night.
Compound of 黒 (kuro, 'black') and 装束 (shōzoku, 'costume, attire').