defeat/ dɪ'fiːt /

1.noun [c/u] [of army] 
战败

2.noun [of team] 
击败

3.noun
(failure) 失败

4.vt.[+enemy] [ opposition] 
战胜

5.vt.[+team] 
击败

6.vt.[+plan] [ proposal etc] 
否决

7.vt.[task] [ challenge+] 
(be too difficult for) 难住