c. 1300, norishen, "to supply with food and drink, feed; to bring up, nurture, promote the growth or development of" (a child, a young animal, a vice, a feeling, etc.), from Old French norriss-, stem of norrir "raise, bring up, nurture, foster; maintain, provide for" (12c., Modern French nourrir), from Latin nutrire "to feed, nurse, foster, support, preserve," from *nutri (older form of nutrix "nurse"), literally "she who gives suck," from PIE *nu-tri-, suffixed form (with feminine agent suffix) of *(s)nau- "to swim, flow, let flow," hence "to suckle," extended form of root *sna- "to swim." Related: Nourished; nourishing.