1. The knee; the joint between the thigh and lower leg in humans and other vertebrates.
Usage: anatomy; formal or technical
2. Any structure or part resembling a knee in shape or function, such as a bend or angle in a plant stem or a joint in an insect's leg.
Usage: botany; zoology

Examples

• The anatomy textbook labeled the genu as a crucial weight-bearing joint.
• The patient reported pain in the genu after the fall.
• In insects, the genu is the segment of the leg between the femur and tibia.
• The genu of the grass stem bent gracefully in the wind.
• Damage to the genu can affect mobility and balance.