noun
: any of several more or less cross-shaped ligaments: as
a. : a V-shaped arrangement of fibers over the extensor tendons of the ankle
b. : either of two ligaments in the knee joint that cross each other from femur to tibia
c. : a complex ligament made up of the transverse ligament of the atlas and vertical fibrocartilage extending from the odontoid process to the border of the foramen magnum