prigušiti

1. (of sound, light) to muffle; to dim; to turn down
   Prigušila je svetlo i upalila sveće. — She dimmed the lights and lit the candles.
   Prigušio je muziku da ne smeta komšijama. — He turned the music down so as not to bother the neighbors.
2. (of feelings, laughter) to stifle; to suppress
   Jedva je prigušila smeh tokom sastanka. — She barely stifled a laugh during the meeting.

The imperfective is prigušivati; prigušeno svetlo means "dim light".