noun

1. SPONGE, primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
2. SPONGE, a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
3. SPONGE, someone able to acquire new knowledge and skills rapidly and easily
4. SPONGE, a porous mass of interlacing fibers that forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used
5. SPONGE, a piece of light natural or artificial material that becomes soft when it is wet, is able to take in and hold liquid, and is used for washing or cleaning
6. SPONGE, a type of sea animal from which natural sponges are made
7. SPONGE, someone who gets something from someone else without doing or paying anything in return

verb

1. SPONGE, gather sponges, in the ocean
2. SPONGE, wipe with a sponge, so as to clean or moisten
3. SPONGE, soak up with a sponge
4. SPONGE, erase with a sponge; as of words on a blackboard
5. SPONGE, ask for and get free; be a parasite
6. SPONGE, to clean or wipe (something) with a sponge
7. SPONGE, to put (paint) on a surface with a sponge
8. SPONGE, to get money, food, etc., from (someone) without doing or paying anything in return

1. finally told the sponge to move out of their house and to get a job
2. She sponged up the spilt milk.
3. He sponged off his face.
4. She sponged the dirt off her shirt.