[boon] n [ME, fr. ON bon petition; akin to OE ben prayer, bannan to summon--more at ban] (12c) 1: benefit, favor; esp: one that is given in answer to a request
2: a timely benefit: blessing
[2]boon adj [ME bon, fr. MF, good--more at bonny] (14c) 1 archaic: favorable
2: convivial "a ~ companion"