What is "nemertine"

nemertine \nemertine\ n. Any of an order ( Nemertina) of soft unsegmented marine worms having an eversible threadlike proboscis and the ability to stretch and contract.

Syn: ribbon worm, nemertean, proboscis worm.

n. soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract [syn: ribbon worm, nemertean, proboscis worm]