1 N-COUNT (常配干酪一起吃的)薄脆饼干 A cracker is a thin, crisp biscuit which is often eaten with cheese. (常配干酪一起吃的)薄脆饼干

2 N-COUNT 有魅力的人;令人喜爱的事物 If you say that someone or something is a cracker, you like and admire them very much. 有魅力的人;令人喜爱的事物 [British, informal]

3 N-COUNT 彩色爆竹，彩色拉炮(在英国主要用于圣诞节，通常装有小玩具和纸帽) A cracker is a hollow cardboard tube covered with coloured paper. Crackers make a loud noise when they are pulled apart and usually contain a small toy and a paper hat. In Britain they are used mainly at Christmas. 彩色爆竹，彩色拉炮(在英国主要用于圣诞节，通常装有小玩具和纸帽)

4 ADJ [verb-link ADJ] 疯狂的;发狂的 If you say that someone is crackers, you think they are crazy or are behaving as if they are crazy. 疯狂的;发狂的 [British, informal]