Definitions

1. adjective

not bright or radiant; lacking light or illumination

“The dim light in the basement made it difficult to see.”

2. noun

a reduction in brightness or amount of light

“The dimming of the lights signaled the start of the movie.”

3. verb

to make something less bright or to reduce its light

“The dimmer switch was used to adjust the room’s lighting.”

4. verb

to become less bright or to lose light

“The sun began to dim as it set below the horizon.”