Limb/lɪm/ Definition 1 of 3Pro Tip 1/3Human Appendage Refers to major parts like arms or legs, but not fingers and toes. She broke a limb when she slipped on ice. Pro Tip 2/3Tree Anatomy Used for larger tree branches, not small twigs. The oak's sturdy limbs were home to many birds. Pro Tip 3/3Physical Injury Often used in the context of accidents or harm affecting arms or legs. The surgeon saved the injured limb after the crash.