noun
1. : the circular water tube that surrounds the esophagus of echinoderms
2. : the circular canal in the edge of the umbrella of a jellyfish that links the radial canals
noun
1. : the circular water tube that surrounds the esophagus of echinoderms
2. : the circular canal in the edge of the umbrella of a jellyfish that links the radial canals
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012