Assertion: penguin's wing | /r/Synonym | flipper
Facets:
Source sentences:
text: The wings of a penguin are called flippers and are shaped like paddles.
text: Since a penguin is a bird, it shares the same body parts: a head with two eyes, two ears and a bill (beak), two wings (called flippers), two legs and a billion small feathers.
text: Nevertheless, they do have wings that are called flippers.