sponge (sponges plural & 3rd person present) (sponging present participle) (sponged past tense & past participle )
1 n-count Sponge is a very light soft substance with lots of little holes in it, which can be either artificial or natural. It is used to clean things or as a soft layer.
...a sponge mattress.
2 n-count A sponge is a sea animal with a soft round body made of natural sponge.
3 n-count A sponge is a piece of sponge that you use for washing yourself or for cleaning things.
He wiped off the table with a sponge.
4 verb If you sponge something, you clean it by wiping it with a wet sponge.
Fill a bowl with water and gently sponge your face and body. V n
Sponge down means the same as sponge., phrasal verb
5 n-var A sponge is a light cake or pudding made from flour, eggs, sugar, and sometimes fat.
It makes a superb filling for cakes and sponges.
6 verb If you say that someone sponges off other people or sponges on them, you mean that they regularly get money from other people when they should be trying to support themselves.
INFORMAL, disapproval He should just get an honest job and stop sponging off the rest of us!... V off n