1 a piece of artificial or natural material that is soft and light and full of holes and can hold water easily, used for washing yourself or cleaning sth 海绵 ☞picture at bucket 见bucket插图
2 =SPONGE CAKE
sponge²
/spʌndʒ ||; spʌndʒ/verb [T] to remove or clean sth with a wet sponge¹(1) or cloth 用海绵或湿布抹去或清洗 sponge off sb(informal 非正式) to get money, food, etc from sb without paying or doing anything in return 白拿别人的钱、吃白食等；靠某人养活；揩油