Hey you! Yes, you! Thank you for adding beauty to the world!
Definitions of donum:
noun: Alternative form of dunam [(historical) An Ottoman Turkish unit of surface area nominally equal to 1,600 square (Turkish) paces but actually varied at a provincial and local level according to land quality to accommodate its colloquial sense of the amount of land able to be plowed in a day, roughly equivalent to the Byzantine stremma or English acre.]