'Horse' in the Bible

I listened and heard, but they didn't speak aright: no man repents him of his wickedness, saying, What have I done? everyone turns to his course, as a horse that rushes headlong in the battle.

The whole valley of the dead bodies and of the ashes, and all the fields to the brook Kidron, to the corner of the horse gate toward the east, shall be holy to Yahweh; it shall not be plucked up, nor thrown down any more forever.

and with you will I break in pieces the horse and his rider;