noun
nemertean; ribbon worm
Zoological term for any worm of the phylum Nemertea. Often referred to by the synonym 紐虫 (ひもむし).
See also: 紐虫
海岸で紐形動物を見つけた。
I found a ribbon worm on the beach.
紐形動物は細
Nemerteans are marine invertebrates with long, slender bodies.