sponge

Definition
(noun) 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 Definition
(noun) someone able to acquire new knowledge and skills rapidly and easily Definition
(noun) a follower who hangs around a host (without benefit to the host) in hope of gain or advantage Definition
(noun) primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies Definition
(verb) wipe with a sponge, so as to clean or moisten Definition
(verb) ask for and get free; be a parasite Definition
(verb) erase with a sponge; as of words on a blackboard Definition
(verb) soak up with a sponge Definition
(verb) gather sponges, in the ocean