light_pen
1. [ noun ] (computer science) a pointer that when pointed at a computer display senses whether or not the spot is illuminated
Synonyms: electronic_stylus
Related terms: pointer computer_science
Similar spelling:   light_up
  light_upon
  light_opera
  light_brown
  light_breeze
  Lightfoot
  light_bulb
  light_beer
  light_beam
  light-blue
  light_bread