имя существительное [ботаника] ость (колоса)
сельское хозяйство костра
noun Etymology: Middle English, from Old English agen, from Old Norse ǫgn; akin to Old High German agana awn, Old English ecg edge — more at edge one of the slender bristles that terminate the glumes of the spikelet in some cereal and other grasses • awned adjective • awnless adjective