нюмышташ (-ам)
{verb I} [Generate paradigm] 1. {also figurative} to gnaw at, to nibble at
♢ шӱмем ойго нюмыштеш {sentence} sorrow is gnawing at my heart
~ ASPECTUAL CONVERB CONSTRUCTIONS ~
// нюмышт пытараш (-ем) {verb II} {perfective} (see above)
♢ тудо лум нюмышт пытарышат, кидшым шовычеш ӱштыльӧ {sentence} after gnawing the bone, (s)he wipes his/her hands on the towel