collar
US /ˈkɑː.lɚ/
UK /ˈkɑː.lɚ/

1.
a band of material around the neck of a shirt, dress, coat, or jacket
:
•
He adjusted the collar of his shirt.
•
The coat has a fur collar.
2.
a band of leather or other strong material put around the neck of an animal, especially a dog or cat
:
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The dog wore a red collar with a tag.
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She put a new collar on her cat.