legacy

Concise Oxford English Dictionary © 2008 Oxford University Press:
legacy/ˈleɡəsi/

▶noun (pl. legacies)

• 1 an amount of money or property left to someone in a will.

• 2 something handed down by a predecessor.

▶adjective Computing denoting hardware or software that has been superseded but is difficult to replace because of its wide use.

– origin ME (also denoting the function or office of a legate): from OFr. legacie, from med. L. legatia ‘legateship’, from legatus (see legate).