cathode-ray tube, CRT - a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen

color television tube, color tube, color TV tube, colour television tube, colour tube, colour TV tube - a television tube that displays images in full color

boob tube, goggle box, idiot box, television receiver, television set, telly, tv set, tv, television - a receiver that displays television images; "the British call a tv set a telly"