Definition of "electron gun" []

• The electrode, especially in a cathode-ray tube, that produces a beam of accelerated electrons. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "All of this flashed through Killaine’s mind in less than a millisecond as she watched the SMS-initiate walk over to Singer and press the business end of the electron gun against the robot’s head."
• "I had ’im dead-bang with the electron gun and then this drunk comes out from behind these trash cans and knocks the gun out of my hand …”"
• "The kid with the electron gun moved closer to Singer, smiling, displaying his crooked, nicotine-stained teeth."