noun, noun which may take the genitive case particle 'no'
water-vascular system
A biological term referring to the hydraulic system found in echinoderms such as starfish and sea urchins, used for locomotion, feeding, and respiration.
ヒトデの水管系は、管足を動かすのに使われる。
The water-vascular system of a starfish is used to move its tube feet.