Merriam-Webster's Collegiate® Dictionary, 11th Edition
BAN
I. verb (banned; banning)
Etymology: Middle English bannen to summon, curse, from Old English bannan to summon; akin to Old High German bannan to command, Latin fari to speak, Greek phanai to say, phōnē sound, voice
Date: 12th century
transitive verb curse , to prohibit especially by legal means , bar 3c , intransitive verb to utter curses or maledictions,
II. noun
Etymology: Middle English, partly from bannen & partly from Old French ban, of Germanic origin; akin to Old High German bannan to command
Date: 14th century
the summoning in feudal times of the king's vassals for military service, anathema , excommunication , malediction , curse , legal or formal prohibition , censure or condemnation especially through social pressure,
III. noun (plural bani)
Etymology: Romanian, money, coin, small coin
Date: 1880
see: money