(Mathematics) A transcendental number, approximately 3.14159, represented by the symbol π, that expresses the ratio of the circumference to the diameter of a circle and appears as a constant in many mathematical expressions.
Attributive form of private eye
A participant of an operation.
Find another word for private-investigator. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for private-investigator, like: private-detective, pi, private eye, operative, shamus and sherlock.