genu
From ZooTerms (Dictionary of Invertebrate Zoology)
genu (noun; plural genua; Latin genu, knee): 1. Any structure or organ with a knee-like bend.
2. (Arthropoda: Chelicerata) In Acari, the segment between the femur and tibia that is activated by its own muscles and tendons, corresponding with the patella in other groups of Chelicerata.
