Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 906
yağrı:-
D yağrı:- (d-) Den. V. fr. yağır; n.o.a.b.; cf. yağrıt-. Türkü viii ff. (the horse) yağrıp an ‘was galled’ (and stood still) IrkB 16: Xak. xi I 104, 25 (içlik).