Collar

Generally, a collar is something which goes around the neck.

In fashion, a collar is the piece of a shirt or dress around the neck which folds over. The tips may optionally have buttons to fasten the collar down to the shirt for a so-called "button-down" collar.

A collar can also be a piece of material put around the neck of an animal, typically a pet, for control, identification, or other purposes. Flea collars, for instance, repel fleas. Identification tags and medical information is often placed on collars.

The collar has been adopted by the BDSM community. In a BDSM context, a collar represents subservience of one kind or another. Collars are also used non-symbolically in the BDSM scene as fetish gear. These collars are often worn purely as fashion. See Collar (BDSM).