Emily Dickinson Lexicon

TREB-LE, a. [trib'l; Fr. triple; L. triplex, triplus; tres, three, and plexus, fold. This should be written trible.]

1. Threefold; triple; as, a lofty tower with treble walls. Dryden.
2. In music, acute; sharp; as, a treble sound. Bacon.
3. That plays the highest part or most acute sounds; that plays the treble; as, a treble violin. Cyc.