'Yoke' in the Bible

It shall be that the city which is nearest to the slain man, that is, the elders of that city, shall take a heifer of the herd, which has not been worked and which has not pulled in a yoke;

therefore you shall serve your enemies whom the Lord will send against you, in hunger, in thirst, in nakedness, and in the lack of all things; and He will put an iron yoke on your neck until He has destroyed you.