Entry 7 senses · 5 variants Webster, 1913 Treble /trĕb'-əl/ · Tre·ble · IPA /ˈtɹɛbəl/ a. adv. n. v. t. v. i. 01 a. Threefold; triple. 1. Threefold; triple. “A lofty tower, and strong on every side With treble walls.” — Dryden. 2. Acute; sharp; as, a treble sound.(Mus.) 02 adv. Trebly; triply. 1. Trebly; triply.[Obs.] 03 n. The highest of the four principal parts in music; the part usually sung by boys or women; soprano. 1. The highest of the four principal parts in music; the part usually sung by boys or women; soprano.(Mus.) 04 v. t. To make thrice as much; to make threefold. imp. & p. p. Trebled; p. pr. & vb. n. Trebling 1. To make thrice as much; to make threefold. 2. To utter in a treble key; to whine.[Obs.] “He outrageously (When I accused him) trebled his reply.” — Chapman. 05 v. i. To become threefold. 1. To become threefold.