1tre·ble 
/ˈtrɛbəl/ noun
plural tre·bles /ˈtrɛbəl/ noun music 1 : the highest range of sounds used in music [noncount] ▪ Turn down the treble on the radio and turn up the bass. [count] ▪ a shrill treble — compare bass 2 [count] : a voice or instrument that has the highest range of sound
▪ The part is sung by a boy treble.
▪ The part is sung by a boy treble.
