limb

The circumferential edge of the apparent disk of a celestial body.

The edge of a graduated arc or circle used in an instrument to measure angles.

The expanded tip of a plant organ, such as a petal or corolla lobe.

One of the larger branches of a tree.

One of the jointed appendages of an animal, such as an arm, leg, wing, or flipper, used for locomotion or grasping.