adj.
Function: adjective
Etymology: Middle English, from Anglo-French, from Latin triplus ― more at TRIPLE
Date: 14th century
1 a : having three parts or uses : THREEFOLD b : triple in number or amount
2 a : relating to or having the range or part of a treble b : HIGH-PITCHED , SHRILL c : of, relating to, or having the range of treble in sound recording and broadcasting < treble frequencies>
– tre · bly \ ' tre-b( ə -)l ē \ adverb