nounDownload🔗ShareA light switch which can adjust the brightness of the switched lamp from dim to bright, as well as turning it on and off.Examples:"I installed a dimmer switch in the dining room so we can adjust the lighting for dinner. "utilityelectronicsdevicebuildingelectricChat with AIVocabulary GamePractice Reading
nounDownload🔗ShareA switch that changes the headlamps on a motor vehicle from low to high and from high to low beam; a high-beam switch; a brights switch.Examples:"I accidentally kicked the dimmer switch while driving, and the bright headlights flashed on. "vehiclemachinetechnologydeviceelectricChat with AIVocabulary GamePractice Reading