A barn is a big building found on farms. Farmers use it to keep food for animals or animals themselves safe and dry.
The farmer keeps hay in the barn.
Cows sleep in the big barn at night.
Sometimes 'barn' means a big, simple building used to keep things, not only on farms. It is often plain and functional.
They fixed the old barn for their workshop.
The barn holds tools and machines now.
A barn can be used to keep vehicles or machines safe. It protects them from rain and wind.
The barn stores the farm tractor safely.
We park old cars inside the barn.
In physics, a barn is a very small unit to measure how likely particles will hit each other. It is much smaller than normal sizes we see.
The nucleus has a cross section of one barn.
Scientists measure particles in barns.
Sometimes people say 'like a barn' when a place is very big and empty. It helps people imagine a large open space.
The old hall felt like a barn inside.
Their empty room was like a barn.
A barn dance is a party held in a barn. People dance together to country or folk music, often in groups.
We went to a barn dance last night.
The barn dance was fun and loud.
