柯林斯词典cocktail dress (cocktail dresses) 1. N-COUNT A cocktail dress is a short dress that is suitable for formal social occasions. 正式场合穿的短裙 返回 cocktail dress剑桥词典a dress worn for a special social occasion in the evening , such as a party or dance （正式场合穿的）晚礼服 返回 cocktail dress