say it: BAR-uhl
barrel is a noun and verb meaning "a tube through which a bullet travels when a gun is fired". It carries 6 recorded senses.
a tube through which a bullet travels when a gun is fired
the quantity that a barrel (of any size) will hold
any of various units of capacity
“a barrel of beer is 31 gallons and a barrel of oil is 42 gallons”
put in barrels
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for barrel come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.