Propter impotentiam
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
On account of helplessness. The term describes one of the grounds of a qualified property in wild animals, consisting in the fact of their inability to escape; as is the case with the young of such animals before they can fiy or run. 2 Bl. Comm. 394,
Defined under Propter in Black's Law Dictionary.