"barrel" in the noun sense
1. barrel, gun barrel
a tube through which a bullet travels when a gun is fired
2. barrel, cask
a cylindrical container that holds liquids
3. barrel, drum
a bulging cylindrical shape hollow with flat ends
4. barrel, barrelful
the quantity that a barrel (of any size) will hold
5. barrel, bbl
any of various units of capacity
"a barrel of beer is 31 gallons and a barrel of oil is 42 gallons"
"barrel" in the verb sense
put in barrels
Source: WordNet® (An amazing lexical database of English)
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