PIE base ‘to protect, feed’.
Other derivatives include fodder, forage, fur, food, foster, repast, pasture, pastor, pantry, company, and companion.
Pokorny, *pā- : pǝ- and pā-t- : pǝ-t- ‘to feed, graze, pasture’, p. 787 and *pō(i)-1 : pəi-? : pī ‘to graze’, p. 839.]