Corporal imbecility
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Physical inability to perform completely the act of sexuai intercourse; not necessarily congenital, and not invariably a permanent and incurable impotence.
Griffeth v. Griffeth 162 111. 368, 44 N. E. 820; Ferris v. Ferris, 8 Co.nn. 168.