- a headlight in which the reflector and lens are hermetically sealed together with the filament in a single unit.
Also called sealed beam.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (esp of a car headlight) having a lens and prefocused reflector sealed in the lamp vacuum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012