- soft-shelled turtle, pancake turtle - voracious aquatic turtle with a flat flexible shell covered by a leathery skin; can inflict painful bites
--1 is a kind of turtle
--1 is a member of Trionychidae, family Trionychidae
--1 has particulars:spiny softshell, Trionyx spiniferus; smooth softshell, Trionyx muticus