American Dictionary

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Definition tail in American English

tail noun

noun
/teɪl/
1

a part at the back of an animal's body that can move

Example

The animal sprays liquid from a gland under its tail.

Example

the bright tail feathers of a peacock

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2

the back part of something that is long or that consists of many parts

Example

the tail of a comet

Example

He was at the tail of the line.

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2.1

the back part of an airplane

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3

someone who is sent to secretly follow someone else, especially a criminal

4

the side of a coin that does not have a picture of a person on it

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5

the bottom part of your shirt that you put inside your pants

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6

a man's formal jacket that is short at the front and has two long pointed parts that hang down at the back

Example

He wore a top hat and tails.

Synonyms and related words
7

to be doing a lot, but achieving very little

Example

I'm so busy this week. I'm just chasing my tail trying to catch up.

Definition tail in American English