Definitions

1. noun

The highest part of a musical note; the part above the middle.

“The treble clef is the symbol used to indicate that a song is in treble pitch.”

2. verb

To increase the pitch of (a sound) or to make (a sound) higher.

“She trebled the singer’s voice with the addition of a digital effect.”

3. noun

The highest part of the human voice or a sound, typically above 1000 Hz.

“The treble singer’s voice was praised for its clarity.”

4. adjective

Relating to or characteristic of the highest part of a musical note or a sound.

“The treble notes on the piano are often the most difficult to play.”