The Collaborative International Dictionary of English v.0.48:
Legacy \Leg"a*cy\ (l[e^]g"[.a]*s[y^]), n.; pl. Legacies
(-s[i^]z). [L. (assumed) legatia, for legatum, from legare to
appoint by last will, to bequeath as a legacy, to depute: cf.
OF. legat legacy. See Legate.]
1. A gift of property by will, esp. of money or personal
property; a bequest. Also Fig.; as, a legacy of dishonor
2. A business with which one is intrusted by another; a
commission; -- obsolete, except in the phrases last
legacy, dying legacy, and the like.
My legacy and message wherefore I am sent into the
He came and told his legacy. --Chapman.
Legacy duty, a tax paid to government on legacies.
Legacy hunter, one who flatters and courts any one for the
sake of a legacy.