A term vulgarly applied to a person of eccentric, ill-regulated, and unpractical mental habits; a person half-crazed : a monomaniac; not necessarily equivalent to “insane person,” “lunatic,” or any other term descriptive of complete mental derangement, and not carrying any implication of homicidal mania . Walker v. Tribune Co. (C. C.) 29 Fed. 827.
Black’s Law Online Dictionary
