Having a fluke or flukes; equipped with a fluke-shaped part, such as a whale's tail fin or an anchor's flat arm.
From 'fluke' (a flat triangular part, possibly from Old Norse 'flóki' or perhaps related to 'fluke' meaning luck). The '-ed' suffix indicates possession of the feature.
Whale flukes are magnificent—a blue whale's flukes can be 30 feet wide! Scientists call the tail itself the 'flukes,' and whales move them up and down (unlike fish, which move tails side to side) for powerful propulsion.
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