noun Date: 1870 a system of canals in echinoderms containing a circulating watery fluid that is used for the movement of the tentacles and tube feet
WATER-VASCULAR SYSTEM
Meaning of WATER-VASCULAR SYSTEM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012