Definition of "Treble" :

noun: the pitch range of the highest female voice

verb: increase threefold

verb: sing treble

adjective: having or denoting a high range

"The boy still had a fine treble voice."

adjective: having more than one decidedly dissimilar aspects or qualities

"Every episode has its double and treble meaning."

adjective: having three units or components or elements

"A treble row of red beads."

adjective: three times as great or many

"A claim for treble (or triple) damages."