From Latin zygomaticus, from Greek zygoma
Adjective
1. Pertaining to the zygoma. (wiktionary.org)
2. of, relating to, constituting, or situated in the region of the zygomatic bone and the zygomatic arch. (merriam-webster.com)
Noun
1. Cheekbone: the arch of bone beneath the eye that forms the prominence of the cheek. (wordnetweb.princeton.edu)
2. The arch of bone beneath the eye that forms the prominence of the cheek. (wordnetweb.princeton.edu)