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.

plural of ghost note

(US) A highway ramp that is inaccessible to traffic, either because the construction work was never completed, or because it has been taken out of use.

plural of ghost bat

plural of ghost ramp

(music) A musical note with a rhythmic value, but no discernible pitch when played, sometimes represented by an X in musical notation.

A traditional Buddhist and Taoist festival in Asia, when ghosts and spirits are said to emerge from the lower realm, and deceased ancestors are venerated.