Proto-Turkic: *č(i)ak-
Meaning: 1 to strike fire 2 flint, fire steel
Russian meaning: 1 высекать огонь 2 кремень, огниво
Old Turkic: čaq- (OUygh.) 1
Karakhanid: čaq- (MK) 1
Turkish: čak- 1
Tatar: čaq- 1
Middle Turkic: čaq- (Sangl.) 1
Uzbek: čaq- 1
Uighur: čaqmaq-taš 2
Sary-Yughur: ča'q- 1
Azerbaidzhan: čax- 1
Turkmen: čaq- 1
Khakassian: sax- 1
Shor: šaɣɨn 'spark'
Oyrat: čaq- 1
Halaj: čaqmaq 2
Yakut: sax- 1
Tuva: šaq- 1
Tofalar: ča'q- 1
Kirghiz: čaq- 1
Noghai: šaqpa 2
Bashkir: saɣ-/saq- 1
Balkar: čaɣ-/čaq- 'to produce sparks, shoot from a flint gun'
Gagauz: čaq- 1
Karaim: čaq- 1
Karakalpak: šaq- 1
Kumyk: čaq- 'to pull the trigger', čaqma 2
Comments: VEWT 95, TMN 3, 80-81, Лексика 373. Kypch. > Chuv. čakma 'fire steel', whence > Mari, Udm. (Федотов 2, 387). The verb is usually regarded as one of the meanings of *čak- 'hit, strike', but the semantics 'strike fire' is attested quite early and allows to use the Turkic material in the Altaic comparison.
