What is the name of the wooden crosspiece fastened over the necks of two animals attached to a plough called?

A yoke is a wooden beam normally used between a pair of oxen or other animals to enable them to pull together on a load when working in pairs, as oxen usually do; some yokes are fitted to individual animals. There are several types of yoke, used in different cultures, and for different types of oxen. A pair of oxen may be called a yoke of oxen, and yoke is also a verb, as in "to yoke a pair of oxen". Other animals that may be yoked include horses, mules, donkeys, and water buffalo.

The word "yoke" is believed to derive from Proto-Indo-European *yugóm (yoke), from verb *yeug- (join, unite). This root has descendants in almost all known Indo-European languages including German Joch, Latin iugum, Ancient Greek ζυγόν (zygon), Persian یوغ (yuğ), Sanskrit युग (yugá), Hittite (iúkan), Old Church Slavonic иго (igo), Lithuanian jungas, Old Irish cuing, Armenian լուծ (luç), etc. (all meaning "yoke").