BOON Meaning of BOON in English I . n. 1.Gift, present, benefaction, grant, favor.2.Benefit, blessing, advantage, good, privilege. II . a. 1.Kind, bountiful, generous, benign, benignant.2.Gay, merry, jovial, jolly, convivial. Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012