To admit or acknowledge something, often reluctantly, as true or correct. After much debate, she finally conceded that her opponent had a valid point.
To yield or grant something, such as a right or privilege. The company conceded the workers' demands for better working conditions.
To admit defeat in a contest or competition. The candidate conceded the election after the final results were announced.
In sports, to allow an opponent to score a goal, point, or run. The defense conceded two goals in the first ten minutes.