Source : Webster's Revised Unabridged Dictionary (1913)

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.