violone

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vi·o·lo·ne

V0110800 (vē′ə-lō′nā)n. A 16-foot organ stop yielding stringlike tones similar to those of a cello.
[Italian, augmentative of viola, viola; see viola1.]

violone

(ˈvaɪəˌləʊn) n (Instruments) the double-bass member of the viol family lying an octave below the viola da gamba. It corresponds to the double bass in the violin family[C18: from Italian, from viola1 + -one, augmentative suffix]