limb /lɪm/ BrE AmE noun [countable]
[ Language: Old English ; Origin: lim ]
1 . out on a limb alone and without help or support:
All the other countries signed the agreement, leaving Britain out on a limb.
He’d gone out on a limb (=taken a risk) to help us.
2 . an arm or leg
3 . strong-limbed/long-limbed etc having strong, long etc arms and legs
4 . a large branch of a tree
⇨ risk life and limb at ↑ risk 2 (1), ⇨ tear somebody limb from limb at ↑ tear 2 (9)