(informal) Resembling a ghost town.

(simile) Very white, especially of a person's face as a result of fear.

(soccer) An apparent goal in which it is not clear whether or not the ball crossed the goal line.

(philosophy) The mental activity that occurs in parallel with physical action, but with no known way for the two to interact, according to theories of mind-body dualism.

plural of ghost goal

plural of ghost flathead

Any of various fishes in the genus Hoplichthys.

(US) A person held in a detention center whose identity has been hidden by keeping them unregistered and therefore anonymous.

plural of ghost catshark

(particle physics) The proposed situation in which a ghost (an excitation of a field with a wrong sign of the kinetic term) acquires a vacuum expectation value, spontaneously breaking Lorentz invariance.