What barrel is made of
A wooden container of staves bound with hoops.
- Barrel staves — has part. Curved oak planks.
- Barrel hoops — has part. Metal hoops pull the staves together.
- Barrel heads — has part. End caps.
- Iron — is made of. The staves are bound with iron hoops.
- Wood — is made of. Barrels are assembled from wooden staves.
- Steel — is made of. Barrels today are steel: oil is shipped in them, hence the barrel as a unit.