tail

○○○ tadpole ⪢⪢
It grows into a tadpole, a larva with gills and a flattened fin-shaped tail.
http://qindex.info/i.php?x=16127

○○○ lodge ⪢⪢
Beavers are easily recognized by their broad flat tails and are well known for the dams and lodges they construct.
http://qindex.info/i.php?x=16461

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