noun
Araneus ventricosus; orb-weaving spider
A species of orb-weaving spider found in East Asia. Often encountered in gardens and forests.
庭でオニグモが大きな巣を張っていた。
An Araneus ventricosus had spun a large web in the garden.
Generic word for spider; オニグモ refers specifically to Araneus ventricosus.
From 鬼 (oni, 'ogre') + 蜘蛛 (kumo, 'spider'), likely referring to its somewhat fearsome appearance.