Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 551-552
tırŋak (?d-)
‘a (human or animal) nail, or claw’. Survives in NE several languages tırğak; Tuv. dırğak; SE Türki tırnak; SC Uzb. tirnok; NW most languages tırnak; SW Az., Tkm. dırnak; Osm. tırnak. The word was confused with tarma:k and some modern words listed there may belong here. See Doerfer III 1182. Türkü viii ff. IrkB 44 (tıtın-): Uyğ. viii ff. Man.-A M I 17, 20 (1 u:ç): Bud. kaltı tırŋak üzeki toprak teg ‘like earth under the nails’ TT VI 336-9: Civ. tıŋrak (sic) bıçğu kün ‘days for cutting the nails’ TT VII 32, 1; a.o.o.: Xak. xi tırŋak al-ẓufr ‘nail, claw’ Kaş. III 382; o.o. I 134 (ürüŋ), 177 (adır-): KB 2377 (iliş-): xiii(?) Tef. tırnak (sic) ‘nail’ 303: xiv Muh. al-ẓufr dırna:k Mel. 47, 9; Rif. 141; (under ‘horses’) ḥāfirhā ‘their hooves’ tırna:k 69, 14; ditto (MS. tına:k) 171: Çağ. xv ff. tırnağ/tırnak nāxun ‘claw’ San. 193r. 25: Xwar. xiv tırnak ‘finger-nail’ Qutb 193: Kıp. xiii (under ‘birds’) al-mixlab ‘claw’ dırğa:k (sic, ? representing dırŋa:k) Hou. 10, 15; al-ẓufr tırnak do. 20, 15: xiv tırnak al-ẓufr İd. 62: xv ditto Kav. 61, 5; Tuh. 24a. 13; maxālib tırnak do. 33b. 9: Osm. xiv to xvi dırnak (once xiv tırnak) ‘nail, claw’; in several texts TTS I 202; II 894; III 191; IV 218.