trämˈpē(ˌ)(y)ō noun
( -s )
Etymology: Spanish, probably diminutive of trompa horn, trumpet, nozzle, probably of Germanic origin like Italian tromba trumpet — more at trombone
: a weedy nightshade ( Solanum elaeagnifolium ) ranging from the central United States to So. America with silvery foliage, violet, blue, or white flowers, and a roundish berry widely used by the natives to curdle milk — called also prairie berry, purple nightshade, silverleaf nightshade