having three units or components or elements; "a ternary operation"; "a treble row of red beads"; "overcrowding made triple sessions necessary"; "triple time has three beats per measure"; "triplex windows"
The highest voice part in harmonic music; the upper half of the whole vocal or tonal range
If something trebles or if you treble it, it becomes three times greater in number or amount than it was. They will have to pay much more when rents treble in January The city has trebled the number of its prisoners to 21,000. = triple + trebling tre·bling A new threat to Bulgaria's stability is the week-old miners' strike for a trebling of minimum pay
three times as great or many; "a claim for treble (or triple) damages"; "a threefold increase"