n.[C]

1. 大头针；别针
2. 饰针；胸针
3. 钉；销；栓
4. 【口】腿[P]
5. 插头；（电子管）管脚；引线
6. 琐碎物，小东西
   That watch isn't worth a pin.

   那只手表一文不值。

vt.

1. （用别针等）别住；钉住[O][（+to/on）]
   The secretary pinned the papers together.

   秘书把文件钉在一起。

2. 压住；按住；使不能行动[O]
   He was pinned under the wrecked car.

   他被压在失事汽车的下面。

3. 把……归罪于，把……归咎于
   They pinned the accident on the bus driver.

   他们把事故归咎于公共汽车司机。

n.

1. a thin piece of metal with a sharp point at one end and a round head at the other, used for fastening pieces of cloth, paper, etc.
   ▸a small brooch or badge.
   ▸Medicine  a steel rod used to join the ends of fractured bones while they heal.
2. a metal peg that holds down the activating lever of a hand grenade, preventing its explosion.
3. a metal projection from a plug or an integrated circuit which makes an electrical connection with a socket or another part of a circuit.
4. Golf  a stick with a flag placed in a hole to mark its position.
5. a skittle in bowling.
6. (pins) informal legs.
7. Chess  an attack on a piece or pawn which is thereby pinned.
8. Brit. historical a half-firkin cask for beer.

v.

1. attach or fasten with a pin or pins.
   ▸ (pin something on) fix blame or responsibility on.
2. hold someone firmly so they are unable to move.
   ▸ (pin someone down) restrict the actions of an enemy by firing at them.
   ▸ (pin someone down) force someone to be specific about their intentions.
3. Chess  hinder or prevent (a piece or pawn) from moving because of the danger to a more valuable piece standing behind it.