limb

any projection that is thought to resemble a human arm

any of the main branches arising from the trunk or a bough of a tree

the circumferential edge of the apparent disc of the sun or the moon or a planet

either of the two halves of a bow from handle to tip

“the upper limb of the bow”

one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper

the graduated arc that is attached to an instrument for measuring angles

“the limb of the sextant”