Comments:EAS 155, Martin 234, Miller 1976, 370-371, 1979b, 17-31, Martin 1996, 35. The parallel seems quite plausible (on a similar interchange between "island" and "forest" see, e.g., under *ā́rV), but vocalism raises some doubts. The reconstruction *ši̯àmi is possible if one assumes PT *simek < *semek (which is quite possible, because the word is only attested in OUygh. and may have actually been semek), and PTM *šumi < *šimu (cf. the Udehe (An.) form simb́o - perhaps archaic).
Comments:Mong. s- points to a following front vowel or diphthong, so one should reconstruct *ši̯ā-; in TM *-ā- and -ia- are frequently neutralized after a palatal. Jpn. *sitǝki = Kor. *stǝ́k; both forms reflect a derivative with a velar suffix (*ši̯āt`i-k`V 'smth. burned, baked'); borrowing Jpn. < Kor. or Kor. < Jpn. is not excluded (see Martin 1996, 45).
Comments:АПиПЯЯ 287, Лексика 197. Kor. has an assimilation, usual for roots of this type; Manchu also demonstrates an assimilation (šoša- < *šosa- which would be regularly expected).
Comments:АПиПЯЯ 281, Дыбо 11. Other comparisons of the above roots (Poppe 61, KW 335, VEWT 425a, SKE 233,240) are quite unreliable. The Kor. form sik- may go back to *sig-Vk- (cf. Turk. *sogɨk); a similar prototype can explain Manchu šaxurun < *šig-ak-urun. It is also interesting to note WMong. (L 658) saɣsurɣa 'hoar-frost' ( < *sug-sarga or *suɣa-surga) {and PT *sạgu-k}.
Comments:EAS 155, Ozawa 111, Murayama 1962, 110, Мудрак Дисс. 41. The Turkic vocalism is quite irregular, probably due to contamination with *si̯ūli 'gall, pus' q. v. (a similar merger occurred in PJ).
Comments:A Western isogloss, with some vocalic irregularities (the reconstruction *šuga would contradict, however, the consonant reflex *s- in Turkic and Mongolian). Cf. *sŭ́ku.
Comments:The etymology seems plausible, although the precise meaning of the root in PA is not quite clear (some sharp instrument used for carving, chopping or ploughing).
Comments:SKE 238. Mong. may be < Turk., see Щербак 1997, 198. The genuine reflex may be Mong. *sir- (Khalkha šürge-, Kalm. šürgǝ- 'to rub off', WMong. sirgü-, KW 371; Khalkha širǖn, Kalm. šürǖn, WMong. sireɣün 'rough, shaggy'; WMong. sirbe- 'to sweep') - although the -i- vowel here is not quite clear. The root generally displays some variation between *ši̯ŭ́re and *ši̯ŭ́ru.
