The Collaborative International Dictionary
Impregn
Impregn \Im*pregn"\, v. t. [Cf. F. impregner. See Impregnate.] To impregnate; to make fruitful. [Obs.]
His pernicious words, impregned
With reason.
--Milton.
Semele doth Bacchus bear
Impregned of Jove.
--Dr. H. More.
Wiktionary
impregn
vb. (context obsolete English) To impregnate; to make fruitful.