Dictionary definition · treble
noun
- the pitch range of the highest female voice
verb
- sing treble
- increase threefold"Triple your income!"
adjective
- having or denoting a high range"soprano voice"
- three times as great or many"a claim for treble (or triple) damages"
- having three units or components or elements"a ternary operation"
- having more than one decidedly dissimilar aspects or qualities"a double (or dual) role for an actor"
Source: Open English WordNet (CC BY 4.0).