κιλλός

ή, όν, α, ον
A. ass-coloured, grey, θερίστριον Eub. 103, cf. Hsch., Phot., Eust. 1057.56:—also κίλλιος, α, ον, Poll. 7.56.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project