κτῆνος, -ους, τό
(< κτάομαι, hence primarily a possession), [in LXX chiefly for בְּהֵמָה, Ge 1:25, al., also for מִקְנֶה, צֹנֵא, etc.;]
a beast, (in late Gk. esp.) a beast of burden: Lk 10:34 pl. (as chiefly in cl.), Ac 23:24, Re 18:13; of quadrupeds, as opp. to fishes and birds (cf. Ge 1:25), I Co 15:39.†