privilege

Merriam-Webster online:

Main Entry: 1priv·i·lege Pronunciation: 'priv-lij, 'pri-v&- Function: noun Etymology: Middle English, from Old French, from Latin privilegium law for or against a private person, from privus private + leg-, lex law Date: 12th century : a right or immunity granted as a peculiar benefit, advantage, or favor : PREROGATIVE; especially : such a right or immunity attached specifically to a position or an office