Lewis & Short

impraegno (inpr-), ātum, 1, v. a. [in-praegno], to impregnate, make pregnant (late Lat.; perh. only in part. perf.): illa ab eo impregnata vidit in somnis per fauces introisse solem, etc., Myth. Vat. ap. Mai. Auct. Class. t. 3, p. 117.