Comments:VEWT 102, EDT 867-868. Morphologically -t - is a collective suffix, -dak/-dɨk - a denominative suffix. The word is attested in MK, but in an aberrant (dialectal) shape with š-, and the meaning 'nut' is probably secondary, the original meaning of the root being 'coniferous tree, branch'. Several other plant names may be related, cf.: Chag. čekɛ 'berries found in the Fergana mountains'; Uzb. čakanda 'облепиха крушиновидная', Uygh. čäkändä 'a bush with red fruits' (R 3, 1947 Taranchi, mod. čakanda 'a k. of thorny bush'), Az. čäkil 'mulberry'; Kirgh. South. čekende 'хвойник; кузьмичева трава; эфедра двуколосковая' (its pseudoberries are edible; despite Yudakhin, not < Iranian - the word is not attested in Persian). Turk. > Pers. čäkäldäk 'blackberry' (Гаффаров).