D defs.my
Entry 2 senses Webster, 1913

Flipper

/flĭp'-ẽr/ · Flip·per · IPA /ˈflɪpɚ/
01 n. A broad flat limb used for swimming, as those of seals, sea turtles, whales, etc.
  1. 1.
    A broad flat limb used for swimming, as those of seals, sea turtles, whales, etc.(Zool.)
  2. 2.
    The hand.(Naut.) [Slang]