The noun collar has 6 senses (first 1 from tagged texts)
1. (5) collar, neckband -- (a band that fits around the neck and is usually folded over)
2. collar, shoe collar -- (the stitching that forms the rim of a shoe or boot)
3. collar -- (a band of leather or rope that is placed around an animal's neck as a harness or to identify it)
4. choker, collar, dog collar, neckband -- (necklace that fits tightly around a woman's neck)
5. collar, leash -- (a figurative restraint; "asked for a collar on program trading in the stock market"; "kept a tight leash on his emotions"; "he's always gotten a long leash")
6. apprehension, arrest, catch, collar, pinch, taking into custody -- (the act of apprehending (especially apprehending a criminal); "the policeman on the beat got credit for the collar")
Overview of verb collar
The verb collar has 3 senses (first 1 from tagged texts)
1. (1) collar, nail, apprehend, arrest, pick up, nab, cop -- (take into custody; "the police nabbed the suspected criminals")
2. collar -- (seize by the neck or collar)
3. collar -- (furnish with a collar; "collar the dog")