Emily Dickinson Lexicon

IM-BE-CIL'I-TY, n. [L. imbecillitas; Fr. imbecillité.]

1. Want of strength; weakness; feebleness of body or of mind. We speak of the imbecility of the body or of the intellect, when either does not possess the usual strength and vigor that belongs to men, and which is necessary to a due performance of its functions. This may be natural, or induced by violence or disease.
2. Impotence of males; inability to procreate children.