with obj.
1- win a victory over (someone) in a battle or other contest; overcome or beat（战斗或其他比赛中）击败, 战胜（某人）：
Garibaldi defeated the Neapolitan army.
加里波第击败了那不勒斯军队。
1.1
- prevent (someone) from achieving an aim挫败（某人）, 使（某人）落空：
she was defeated by the last steep hill.
她没能越过最后一座陡峭的小山。
1.2
- prevent (an aim) from being achieved阻止达成（目的）, 使（目标）无法实现：
don't cheat by allowing your body to droop - this defeats the object of the exercise.
不要弯曲身体, 那是偷懒——这样会达不到锻炼目的的。
1.3
- reject or block (a motion or proposal)反对, 妨碍（动议或提议）：
the amendment was defeated.
修正案被否决了。
1.4
- be impossible for (someone) to understand使无法理解：
this line of reasoning defeats me, I must confess.
这样的推理我无法理解, 我必须承认。
1.5
- Law render null and void; annul【律】使无效, 废除。
- an instance of defeating or being defeated击败, 被打败：
a 1-0 defeat by Grimsby
1比0被格里姆斯比队打败
mass noun she had still not quite admitted defeat.她还是没有完全承认失败。
词源
late Middle English （in the sense 'undo， destroy， annul'）： from Old French desfait 'undone'， past participle of desfaire, from medieval Latin disfacere 'undo'.