Webster’s Revised Unabridged Dictionary · 1913
Tympano
Tym′pa·no (tĭm′pȧ·nō), n.; pl. Tympani (#). [It. timpano. See Tympanum.] (Mus.) A kettledrum; — chiefly used in the plural to denote the kettledrums of an orchestra. See Kettledrum. [Written also timpano.]