limb
/lɪm; lɪm/ n
1 leg, arm or wing 肢（腿、 臂或翼）
I need to sit down and rest my weary limbs. 我要坐下歇歇腿.
2 main branch of a tree 树的主枝.
3 (idm 习语) life and limb => life. out on a `limb (infml 口) isolated and vulnerable; without supporters (used esp in the expressions shown) 孤立而脆弱, 没有支持者（尤用於以下示例）
leave sb/be/go out on a limb 弃某人於[处於/陷於]孤立无援的境地. sound in wind and limb => sound1. tear sb limb from limb => tear2.