Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 440-441
?D tavilku:
‘Spiraea’, perhaps specifically Spiraea altaica; according to Yud. a shrub with particularly strong branches used to make bows and the like; botanically distinct fr. ‘the jujube tree (or shrub), Zizyphus’, but not unlike it. For the form cf. avılku:; -ku: is not a recognized Turkish suffix, but this word and tavılğu:ç must have a common origin, possibly foreign. Survives in several NE dialects as tabılka/tabılkat/tabılğı R III 972; Khak. tabılği; NC Kır. tabılği; Kzx. tabılğı/tobulğu; SC Uzb. tabulğa; NW Kum. toburğu. A l.-w. in Russian as tavolga (and tavolozhnik). Türkü viii ff. bir tavilku: yüz boltı: ‘one Spiraea became a hundred’ (a hundred S. became a thousand, and a thousand S. ten thousand) IrkB 32: Xak. xi tavilku: dialect form (luğa) of tavılğu:ç ‘jujube tree’ Kaş. I 489: Çağ. xv ff. tobulğu ‘the name of a hard red-coloured tree (diraxt . . . ṣulb wa surx-rang) from the branches of which they make handles for whips’ San. 167v. 21.