1Victory or defeat — the win/loss outcome of a contest, game, or competition.
試合の勝負は最後の一点で決まった。
The outcome of the match was decided by the final point.
この勝負、絶対に負けられない。
I absolutely cannot afford to lose this one.
勝負はまだ分からない。最後まで諦めるな。
The outcome isn't decided yet — don't give up until the end.
2A match, contest, or bout; used with する (勝負する) it means to compete head-to-head.
今夜は将棋で兄と勝負する。
Tonight I'm going to play a shogi match against my brother.
決勝戦は両者譲らぬ好勝負だった。
The final was a great match where neither side would give an inch.
ここが勝負どころだと思って全力を出した。
I felt this was the decisive moment, so I gave it everything.