Proto-Altaic: *si̯obe ( ~ -p-)
Meaning: freckles, pimples
Russian meaning: веснушки, прыщи
Comments: A Western isogloss. The Mong. root noun *seb makes the inner Turkic derivation < *sep- 'to scatter' (see e.g. ЭСТЯ 7) rather improbable. The TM form presupposes a semantic development 'skin defect' > 'wrinkled skin' > 'fish skin'; cf. for it, however, alternatively WMong. sabkin 'dressed leather'.
