- flipper, flippers, fin, fins - a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater)
--1 is a kind of shoe; shoe; shoe; shoe
Derived form: verb flip7 - flipper - the flat broad limb of aquatic animals specialized for swimming
--2 is a kind of limb; limb
--2 is a part of aquatic vertebrate; aquatic mammalDerived form: verb flip7