n
1 [C often pl 常作复数] contest to decide who is the champion 锦标赛
*win the world championship 赢得世界冠军
* The European championships are being held in Rome. 欧洲锦标赛正在罗马举行.
* [attrib 作定语] a championship medal 冠军奖章.
2 [C] position of being a champion 冠军地位
*The championship is ours. 冠军是我们的. =>Usage at sport 用法见sport.
3 [U] vigorous support 有力的支持
*her championship of our cause 她对我们事业的有力支持.

n
[C]alsochampionships [plural]
a competition to find which player, team etc is the best in a particular sport
　the women's figure skating championships
　Holland won the European Championship.
[C]
the position or period of being a champion
= title
　Warwickshire are the current holders of the cricket championship.
[U + of]written
the act of championing something or someone