Private eye

noun

Definitions

Noun
  1. 1
    A private personal detective, employed to gather information about someone. idiomatic
  2. 2
    someone who can be employed as a detective to collect information and assist in criminal investigations wordnet

Etymology

From private investigator and its abbreviation P.I., through the homophonic term eye in place of "I", and the use of "eye" as a reference to surveillance.

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