Comments:SKE 38; Poppe 1950, 572, Lee 1958, 113, Menges 1984, 266, АПиПЯЯ 77; Дыбо 5, Martin 231, Miller 1985, 150, 1985a, 83, JOAL 99, Whitman 1985, 126, Лексика 276. The root is quite reliable, but not completely regular, probably due to contractions and assimilations (not quite clear is -i- in Mong. - on analogy with ǯirüke 'heart'? - and voicing of -k- in TM).
