The Collaborative International Dictionary of English v.0.48:Cothurnate \Co*thur"nate\ (k?-th?r"n?t), Cothurnated \Co*thur"na*ted\ (-n?-t?d), a. 1. Wearing a cothurn. [1913 Webster] 2. Relating to tragedy; solemn; grave. [1913 Webster]