The Collaborative International Dictionary of English v.0.48:
Improvisatrice \Im`pro*vi`sa*tri"ce\, n. See Improvvisatrice. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Improvvisatrice \Im`prov*vi`sa*tri"ce\, n.; pl. Improvvisatrici. [It. See Improvise.] A female improvvisatore. [Written also improvisatrice.] [1913 Webster]