collar [ˈkɑːlɚ]

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¹ collar noun

• a part of a piece of clothing that fits around a person's neck and is usually folded down
• a band of leather, plastic, etc., worn around an animal's neck
• a ring or band used to hold something (such as a pipe or a part of a machine) in place

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² collar verb

• to catch or arrest (someone)
• to stop (someone) in order to talk : to force (someone) to have a conversation