dog tag


noun

a small disk or strip attached to a dog's harness or collar stating owner, home, etc.
Informal.
  1. any tag for a suitcase, camera, or other personal possession with the owner's name or address.
  2. a tag or card with a person's name or affiliation, worn at conventions, large meetings, etc.

Origin of dog tag

First recorded in 1915–20

British Dictionary definitions for dog tags

dog tag

noun

US slang a military personal-identification disc