[a. ON. blæsma adj. (a ewe or goat) in heat; ODu. blesme (Kolkar).] Of a ewe: In heat. (See quot.)
1668. Wilkins, Real Char., II. ix. § 2. 234. Carnal, fleshly, blissom, clicket, proud.
1727. Bradley, Fam. Dict., s.v. Ewe, Ewe is Bliessom, a Term peculiar to Sheepherds, signifying that the Ewe has taken Tup.