The Collaborative International Dictionary of English v.0.48:
Leggiadro \Leg`gi*a"dro\ (l[asl]d`j[-e]*[aum]"dr[-o]), Leggiero \Leg`gi*e"ro\ (l[asl]d`j[-e]*[asl]"r[-o]), a. & adv. [It.] (Mus.) Light or graceful; in a light, delicate, and brisk style. [1913 Webster] Legging