Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun flipper

2 senses of flipper

Sense 1
flipper, fin -- (a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater))
       => shoe -- (footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material)

Sense 2
flipper -- (the flat broad limb of aquatic animals specialized for swimming)
       => limb -- (one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper)