an activity in which people buy tickets with different numbers, some of which are later chosen to win prizes, that is organized in order to make money for a good social purpose

a raffle ticket/prize 抽彩奖券／奖品

I have never won anything in a raffle. 我从来没在抽彩中赢得过任何奖品。

to offer something as a prize in a raffle

We are going to raffle off a car for the hospital appeal. 为医院举行的慈善抽奖活动中，我们将用一辆汽车作为奖品。

See also: draw verb (CHOOSE)