Definition of low beam
: a vehicle headlight beam with a short-range focus
Examples of low beam in a sentence
The car's headlights were on low beam.
Turn on your low beams.
First Known Use of low beam
LOW BEAM Defined for English Language Learners
Definition of low beam for English Language Learners
: the setting of a vehicle's headlights that makes the least bright light
Learn More about low beam
Seen and Heard
What made you want to look up low beam? Please tell us where you read or heard it (including the quote, if possible).