Nickname of the F-4B jet fighter flown by U.S. marines in Vietnam.

Rolls-Royce Phantom

A ghost or apparition.

Something apparently seen, heard, or sensed, but having no physical reality; an image that appears only in the mind; an illusion or delusion.

(bridge) A placeholder for a pair of players when there are an odd number of pairs playing.

(medical imaging) A test object. A test phantom is an object that reproduces the characteristics of human tissue.

Illusive.

Fictitious or nonexistent.