Proto-Altaic: *sark`V
Meaning: to drip, splatter
Russian meaning: капать, плескаться
Comments: A Western isogloss. Note some of the Turkic derivatives (Kum. sarqɨm 'thin flow', Tat. dial. sarqɨm 'thick whey left after pressing curds' etc., see ЭСТЯ 7) which may speak in favour of the original meaning 'to ooze, be filtered'. In this case the root may actually be derived from *sā̀rV 'to be rare, thinned out' (q. v.) (assuming that length in TM was secondarily shortened); cf. especially the common Western derivative *sār-k`V 'maw used for filtering / fermenting'.
