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.

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

A test object that reproduces the characteristics of human tissue.

Short for phantom power

Illusive.

[…] (it was the town's humour to be always gassing of phantom investors who were likely to come any moment and pay a thousand prices for everything) — “[…] Them rich fellers, they don't make no bad breaks with their money. […]”

Fictitious or nonexistent.

a phantom limb

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

A Rolls-Royce Phantom automobile.

Paul pulled out the Phantom; niggas can't stand it but them hoes gonna come out.