jugalPronunciation: /ˈdʒuːgəl/Definition of jugal adjective 1 Anatomy relating to the zygoma (the bony arch of the cheek). 2 Entomology relating to the jugum of an insect’s forewing. Origin: late 16th century: from Latin jugalis, from jugum 'yoke'jugal in other Oxford dictionaries Definition of jugal in the US English dictionary