n.[C]

1. 残端，残段；残肢；残牙
2. 烟蒂
3. 存根，票根
4. 短而粗的东西；笔尖粗短的钢笔
5. 树桩，残根

vt.

1. 使碰踢[O]
   He stubbed his toe against the doorsill.

   他的脚趾踢到了门槛上。

2. 清除（地）里的树桩；连根拔除
3. 掐灭[（+out）]
   He stubbed out his cigarette.

   他把烟头掐灭。

n.

1. the truncated remnant of a pencil, cigarette, or similar-shaped object after use.
2. a truncated or unusually short thing:
   he wagged his little stub of tail.
3. the counterfoil of a cheque, ticket, or other document.
4. [as modifier] denoting a projection or hole that goes only part of the way through a surface.

v.

1. accidentally strike (one's toe) against something.
2. extinguish (a cigarette) by pressing the lighted end against something.
3. grub up (a plant) by the roots.