pencil beam

  1. a cone-shaped radar beam.

Origin of pencil beam

First recorded in 1945–50

Words Nearby pencil beam Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use pencil beam in a sentence

  • A thin pencil-beam of light stabbed outward from behind the nearer building.

    Master of the Moondog | Stanley Mullen