The Collaborative International Dictionary of English v.0.48:
Blissom \Blis"som\, v. i. [For blithesome: but cf. also Icel. bl?sma of a goat at heat.] To be lustful; to be lascivious. [Obs.] [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Blissom \Blis"som\, a. Lascivious; also, in heat; -- said of ewes. [1913 Webster]