id

id · noun

imported

Definitions

noun

  1. 1.

    (Informal) Short for identification or identity document.

  2. 2.

    (Psychology) In Freudian theory, the part of the mind that contains primitive instincts and desires.

Forms

plural: ids

Phrases & expressions

  • •
    show ID — to present identification documents
  • •
    check ID — to verify someone's identity or age

Related words

See also: ego, identification, identity, superego
Synonyms: identification, identity card

Etymology

Sense 1: Abbreviation of identification. Sense 2: From Latin id ("it"), used by Freud in German as das Es, translated to English as "the id."