n.
1 an advantage; a blessing.
2 archaic a a thing asked for; a request. b a gift; a favour.
Etymology: ME, orig. = prayer, f. ON boacuten f. Gmc
2.
adj. close, intimate, favourite (usu. boon companion).
Etymology: ME (orig. = jolly, congenial) f. OF bon f. L bonus good
Useful english dictionary. 2012.