/dim"euhr/ , n.
1. a person or thing that dims.
2. Also called dimmer switch . a rheostat or similar device by which the intensity of an electric light may be varied.
3. dimmers ,
a. the low-beam headlights of an automobile or truck.
b. the small, parking lights of an automobile.
[ 1815-25; DIM + -ER 1 ]