κτῆνος, -ους, τό

(κτάομαι, hence primarily a possession), [in LXX chiefly for בְּהֵמָה Gen.1:25, al. also for מִקְנֶה, צֹנֵא, etc. ;]

a beast, (in late Gk. esp.) a beast of burden: Luk.10:34 pl. (as chiefly in cl.), Act.23:24, Rev.18:13; of quadrupeds, as Opp. to fishes and birds (cf. Ge, l.with), 1Co.15:39.†

(AS)

a beast; a beast of burden