Comments:SKE 20, EAS 64. Turkic forms are attested late and can be < Mong.; however, Turkm. čāGa with a long vowel is hard to explain as a loan. On the other hand, cf. Karakh. čekün 'young of marmot' (EDT 415), Evk. čekše 'tarbagan': if these words are related, the PA reconstruction should be changed to *č`ek`a.