pis-

Kazakh: pis-
Noghai: piskek 'churn-staff'
Bashkir: beše- 'to churn; to beat', beškäk 'churn-staff'
Karakalpak: pis-; piskek 'a big churn'
Comments: ЭСТЯ 2, 309-310, Stachowski 61, Ашм. X, 241-242. In a part of languages the root merges with *biĺč- "to ripen"; it differs from the latter by its original transitivity and consequent front vocalism.