* Noun: This is the most common use. A barrel is a container, usually made of wood or metal, with a rounded body and flat ends.
* Example: "The barrel of oil was heavy."
* Verb: To "barrel" means to move at high speed, often in a reckless or uncontrolled way.
* Example: "The car barreled down the street."
* Adjective: While less common, "barrel" can be used as an adjective to describe something that is shaped like a barrel.
* Example: "The barrel chest of the wrestler was intimidating."
Therefore, the part of speech of "barrel" depends on its context in a sentence.