食い下がる
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips
食い入る is read as くいいる (kuiiru) and means to eat into.
くいいる
kuiiru
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips