0 a soft substance that is full of small holes and can absorb a lot of liquid, and is used for washing and cleaning -- (擦洗物品用的)海綿
1 a soft cake made with eggs, sugar, and flour but usually no fat -- 海綿蛋糕
2 to get money, food, etc. from other people, especially in order to live without working -- 白吃,白要;(尤指)吃白飯
sponging off the state 靠國家來養活
3 to rub something or someone with a wet sponge or cloth, especially to clean it, him, or her -- 用濕海綿(或濕布)擦,擦洗