A sandpit is a place where children play with sand, often found in playgrounds.
Sandpits are fun places for kids to play and use their imagination.
Examples:
The children build sandcastles in the sandpit.
Let's go play in the sandpit at the park.
I like to dig in the sandpit with my toy shovel.
The cat thinks the sandpit is a big litter box.
The sandpit is like a beach, but smaller and without water.
I pretend the sandpit is a big desert and I'm an explorer.