柯林斯詞典cocktail dress (cocktail dresses) 1. N-COUNT A cocktail dress is a short dress that is suitable for formal social occasions. 正式場郃穿的短裙 返回 cocktail dress劍橋詞典a dress worn for a special social occasion in the evening , such as a party or dance （正式場郃穿的）晚禮服 返回 cocktail dress