틀어요 · 틀었어요 · 틀 거예요 · 트세요 (ㄹ drops)
to turn on (TV, radio, AC, music); to twist, to turn
Example
날씨가 너무 더워서 에어컨을 틀었어요.
It was so hot that I turned on the air conditioner.
Word parts
Core idea 'twist': old dials and faucets were twisted on.
Good to know
틀다 is common for media and AC; for lights use 켜다.
Related words