All 6 Uses

laser
in
The Adventures of Captain Underpants
(Edited)

Heavy gears began shifting and spinning, and a laser beam from the crystal shot straight up through a hole in the roof.
p. 74.8

laser = an optical device that produces an intense narrow beam of light
"In exactly twenty minutes, this laser beam will blow up the moon and send huge chunks of it crashing down upon every major city in the world!" laughed Dr. Diaper.
p. 75.1 *

laser = a device that concentrates intense light on a small spot
So George, Harold, and Captain Underpants frantically looked all over the Laser-Matic 2000, searching for a way to shut it down and stop the inevitable disaster.
p. 99.8

laser = an optical device that produces an intense narrow beam of light
The huge laser beam turned off, and pieces of the machine began flying off in all directions.
p. 100.6
You destroyed my Laser-Matic 2000.
p. 101.3
The Laser-Matic 2000 blew up, tearing apart the old warehouse.
p. 106.1

Definitions:

(1) (laser)
an optical device that produces a narrow beam of light

LASER is an acronym for Light Amplification by Stimulated Emission of Radiation.
(2) (meaning too rare to warrant focus)