noun
black spot; black dot; bull's-eye
Literal black mark or dot; also used for a bull's-eye in target shooting.
的の中心に黒星が描かれている。
A black dot is drawn at the center of the target.
彼は黒星に命
He hit the bull's-eye.
noun
Originally a sumo term for a loss mark (●), now widely used in sports, games, and general contexts for a defeat or failure. Often contrasted with 白星 (victory).
See also: 負け星 (まけぼし)
昨日の試合でチームは黒星を喫した。
The team suffered a loss in yesterday's game.
今場所は三つ目の黒星がついた。
He got his third loss this tournament.