dimmer
nounUK /ˈdɪməː/ · US /ˈdɪmɚ/
Etymology From dim (verb) + -er.
1
A rheostat that is used to vary the intensity of a domestic electric light
2
A switch used to select between the low and high headlamp beam on a road vehicle. (usually as "dimmer switch", primarily in North America; elsewhere "dipswitch" or "dipper switch")
- Related terms
- dimmer switch, dipper, dipswitch