What does "theatrical" mean?

Theatrical: Of or pertaining to a theater, or to the scenic representations; resembling the manner of dramatic performers; histrionic; hence, artificial; as, theatrical performances; theatrical gestures. -- The*at`ri*cal"i*ty, n. -- The*at"ric*al*ly, adv. No meretricious aid whatever has been called in -- no trick, no illusion of the eye, nothing theatrical. R. Jefferies.