What is Limb ?
Limb is (noun) 1. a leg or arm He was lucky not to break a limb in the accident. danger to life and limb danger that someone may be hurt When he’s on his motorbike he’s a danger to life and limb. 2. a branch of a tree out on a limb in a difficult situation He feels out on a limb, with no one to share responsibility for running the company.
source: Easier English, Student Dictionary Upper Intermediate Level