Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 30
D uçruğ
N.Ac. fr. uçur-; ‘causing to fly’ with metaph. extensions. Pec. to Uyğ. Uyğ. viii ff. Bud. tuğ uçruğ töpö tartığda ulatı etig tümekler üze ‘with ornaments and adornments(?) such as flying flags, hair ribbons and the like’ U II 40, 107-8; (the Buddha who is) yıd uçruğlar el(l)igi ‘the king of perfume scatterings’ U II 57, 1 (ii); a.o. Suv. 490, 23.