collar

Anything that encircles the neck.

A piece of meat from the neck of an animal.

Any encircling device or structure.

(in compounds) Of or pertaining to a certain category of professions as symbolized by typical clothing.

The neck or line of junction between the root of a plant and its stem.

A ringlike part of a mollusk in connection with the esophagus.

An eye formed in the bight or bend of a shroud or stay to go over the masthead; also, a rope to which certain parts of rigging, as dead-eyes, are secured.

An arrest.

A trading strategy using options such that there is both an upper limit on profit and a lower limit on loss, constructed through taking equal but opposite positions in a put and a call with different strike prices.