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From Citizendium, the Citizens' Compendium

The zygomatic arch is part of the temporal bone of the skull that forms the cheek bone. The zygomatic arch is also known as the zygomatic bone, the zygoma, the malar bone, the cheek bone, and the yoke bone. It comes from the Greek word "zygon" meaning yoke or crossbar by which two draft animals like oxen could be hitched to a plow or wagon.^[1]

1. ↑ "Zygomatic Arch Definition", http://www.medterms.com/script/main/art.asp?articlekey=6072, Medical Dictionary, 5/3/08