feed: [OE] Feed was formed from the noun food in prehistoric Germanic times. It comes via Old English fēdan from Germanic *fōthjan, a derivative of *fōthon, the noun from which modern English food is descended. Its use as a noun, for ‘food, fodder’, dates from the 16th century. => food
Old English fedan "nourish, give food to, sustain, foster" (transitive), from Proto-Germanic *fodjan (cognates: Old Saxon fodjan, Old Frisian feda, Dutch voeden, Old High German fuotan, Old Norse foeða, Gothic fodjan "to feed"), from PIE root *pa- "to protect, feed" (see food). Intransitive sense "take food, eat" is from late 14c. Meaning "to supply to as food" is from 1818.
"action of feeding," 1570s, from feed (v.). Meaning "food for animals" is first attested 1580s. Meaning "a sumptuous meal" is from 1808. Of machinery, "action of or system for providing raw material" from 1892.