S: (n) collar (anything worn or placed about the neck) "the thief was forced to wear a heavy wooden collar"; "a collar of flowers was placed about the neck of the winning horse"
S: (n) collar (a short ring fastened over a rod or shaft to limit, guide, or secure a machine part)
S: (n) collar, shoe collar (the stitching that forms the rim of a shoe or boot)
S: (n) collar (a band of leather or rope that is placed around an animal's neck as a harness or to identify it)
S: (n) 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"