G5268
ὑποζύγιον
donkey
ὑπο-ζύγιος, -α, -ον [in LXX for חֲמוֹר ;] under the yoke; as subst., τ . (Hdt., al.), a beast of burden; colloq., an ass (see Deiss., BS, 160 f.), and so always in LXX and NT: Mat.21:5 (LXX), 2Pe.2:16.† (AS)
The KJV translates G5268 in the following manner:
ass (4x), the (2x)
Full Thayer's lexicon entry
ὑποζύγιον — hypozýgion
ὑποζυγιος, ὑποζύγια, ὑποζύγιον, equivalent to ὑπό ζυγόν ὤν, under the yoke; neuter τό ὑποζύγιον as a substantive, a beast of burden (so from Theognis, and Herodotus down); in Biblical Greek (since the ass was the common animal used by the Orientals on journeys and for carrying burdens (cf. B. D. under the word, Ass, 1)) specifically, an ass: Mat 21:5 (Zec 9:9); 2Pe 2:16; the Sept. for חֲמור, an ass.
2 occurrences
Matthew (1), II Peter (1)