tail
US /teɪl/
UK /teɪl/
1.
the hindmost part of an animal, especially when prolonged beyond the rest of the body, such as the caudal appendage of a vertebrate, which consists of a flexible series of vertebrae and is used for balance, propulsion, or as a prehensile organ.
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The dog wagged its tail excitedly.
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A peacock has a magnificent tail.
2.
the rear or end part of something.
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The plane's tail section was damaged.
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He was at the tail end of the line.