Limb can have many meanings. from the Old English lim: Limb (anatomy), a limb is a jointed or prehensile appendage of the human or animal body a large or main branch of a tree. In social structure, a representative, branch or member of a group or organization. From the Latin limbus: In a measuring instrument, the graduated edge of a circle or arc. In astronomy, designates the border or outermost edge of the apparent disk of a celestial body such as that due to limb darkening. In botany, de… (More on Limb)