From The Collaborative International Dictionary of English v.0.48: Thwarter \Thwart"er\, n. (Far.) A disease in sheep, indicated by shaking, trembling, or convulsive motions. [1913 Webster]
Thwarter \Thwart"er\, n. (Far.) A disease in sheep, indicated by shaking, trembling, or convulsive motions. [1913 Webster]