a barrel of laughs

a Determinative

— A is used when the following word could be any of a certain type. Compare "A book I saw on the shelf" and "The book I gave you yesterday".

a Noun

— A is the first letter of the alphabet. The letter "a" comes before "b". — In some schools, an A is a very high grade. Ron got an A on his earth science test.

barrel Noun

— A barrel is a tall and round container. — A barrel is the amount of something that is in a full barrel, or that would fit in the barrel. For example, a barrel of water or a barrel of beer. — The barrel of a gun is the part the bullet goes through. — The barrel of a clarinet is the part you connect the mouth piece. — The barrel of a horse or pony is its ribs. — A barrel is a solid metal tube that may be part of some machines.

barrel Verb

— If you barrel, you move very quickly.

of Preposition

— Made using. It is a house of cards.

laugh Verb

— Someone laughs when they make a sound with their mouth because they think something is funny. It can sound like "ha ha", "ho ho", "hee hee", etc. That was a really good joke. I've never laughed so hard!

laugh Noun

— The sound of someone laughing, or the action of laughing. We had lots of good laughs at the party. I heard a laugh in the other room and went to see what they were laughing at.