The wine is left to mature in oak barrels.
The barrel of a gun is made of steel.
This country produces almost 2 million barrels of oil per day.
1. To keep warm they burnt wood in a rusty oil barrel.
2. You'll eat so much your belly'll be like a barrel.
3. Pork-barrel politicians hand out rents to win votes and influence people.
4. The suppers are always a barrel of laughs.
5. Oil prices were closing at $19.76 a barrel.
6. The gun barrel grated against the floor.