Proto-Mongolian: *ǯab
Meaning: 1 crack 2 gap, interval 3 leisure 4 сorner of the mouth
Russian meaning: 1 щель 2 промежуток, интервал 3 свободное время 4 угол рта
Written Mongolian: ǯab 3, ǯabaɣ 1, ǯabsar 1, 2 (L 1018, 1019)
Middle Mongolian: ǯabusar (~ süeni) 'midnight' (HY 6), ǯabsar (MA) 1,2, ǯaba 'Felsspalte', ǯabaǯi(n) 4 (SH)
Khalkha: ʒav 3; ʒavsar 1,2,3; ʒavǯ 4
Buriat: zab 3; zabag 1, zabhar 2
Kalmuck: zab; zawsṛ 1
Ordos: ǯawaG 1, ǯabsar 2, ǯab 3
Dongxian: žava 1, 2
Baoan: ǯabte 'between'
Shary-Yoghur: ǯab; ǯabsar 2; ǯawāǯǝ 4
Monguor: ʒ́absar, ćabsar (SM 75, 441) 2
Comments: KW 462, 468, MGCD 419, 420. Mong. > Kirgh. ǯapsar etc. Cf. also *ǯaɣa- 'to separate, make room', *ǯaɣag 'interval' (KW 469, MGCD 417), MMong. ǯa'ura 'between' (SH). Cf. also WMong. ǯaji, ǯai, Kalm. zǟ 'space, interval' (KW 470, MGCD 424). A Mong. source is probable for Nan. ǯaor, Bik. ǯawara, Ul. ǯawụl 'cross-road; place where rivers meet' etc. (ТМС 1, 241): cf. WMong. ǯabila- 'to sit cross-legged' (MGCD 420). Mong. > Man. ǯabdu- 'to have leisure for' (see Rozycki 117-118).
