barrel这个单词什么意思？

barrel
n.
桶
vt.
装入桶内

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。
vt.
1. 将...装桶
vi.
1. 【美】【俚】高速行进

1桶，琵琶桶
2一桶之量
3圆筒；筒形物
4枪管；炮管（军）
4镜头筒；、笔杆