id Meaning, Definition & Usage

  1. noun a state in the Rocky Mountains
    Gem State; Idaho.
  2. noun a card or badge used to identify the bearer
    I.D..
    • you had to show your ID in order to get in
  3. noun (psychoanalysis) primitive instincts and energies underlying all psychic activity

WordNet

Id noun
Definitions
  1. (Zoöl.) A small fresh-water cyprinoid fish (Leuciscus idus or Idus idus) of Europe. A domesticated variety, colored like the goldfish, is called orfe in Germany.

Webster 1913