Term: sea urchin: shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: greek mythology: the mythology of the ancient Greeks
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: hyaline cartilage: translucent cartilage that is common in joints and the respiratory passages; forms most of the fetal skeleton
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: dealer: the person who distributes the playing cards in a card game
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: hemiramphidae: halfbeaks; marine and freshwater fishes closely related to the flying fishes but not able to glide
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: pluvianus: coursers
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: challenge: a demand by a sentry for a password or identification
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: polygynist: a man with two or more wives
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: night: darkness
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: demonstrability: capability of being demonstrated or logically proved
Broader: echinoderm: marine invertebrates with tube feet and five-part radially symmetrical bodies | Unrelated: boatload: the amount of cargo that can be held by a boat or ship or a freight car