barrel

n.[C]

1. （中间粗两端细的）大桶
   The wine is left to mature in oak barrels.

   葡萄酒在橡木桶中陈酿。

   a beer barrel

   啤酒桶

2. 一桶的量；（液量单位）桶[（+of）]
   This country produces about 50 million barrels of oil per month.

   该国每月产油五千万桶。

   How much does a barrel of oil cost?

   一桶石油要多少钱？

3. 枪管；炮筒
4. 筒形物；笔杆；活塞筒；羽毛管
5. （牛，马的）躯干
6. 【口】大量，许多[（+of）]
   a barrel of fun

   十分好玩

   He has a barrel of money about him.

   他身上带着许多钱。