primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies | any animal lacking a backbone or notochord; the term is not used as a scientific classification |
a follower who hangs around a host (without benefit to the host) in hope of gain or advantage | |
someone able to acquire new knowledge and skills rapidly and easily | |
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 | |