Merriam-Webster's Collegiate® Dictionary, 11th Edition
LIMB
I. noun
Etymology: Middle English lim, from Old English; akin to Old Norse limr limb and perhaps to Old English lith limb Date: before 12th century
1. one of the projecting paired appendages (as wings) of an animal body used especially for movement and grasping but sometimes modified into sensory or sexual organs, a leg or arm of a human being, a large primary branch of a tree, an active member or agent, extension , branch , a mischievous child, limbless adjective limby adjective
II. transitive verb
Date: 1674
dismember , to cut off the limbs of (a felled tree),
III. noun
Etymology: Latin limbus border
Date: circa 1677
the outer edge of the apparent disk of a celestial body, the expanded portion of an organ or structure