backyard
n. countable A2 Elementary US //ˈbækˌjɑɹd// UK //bˈækjɑːd// back·yard
n. an area of grass or a small garden behind a house. It is a private space where you can relax, play, or have a meal outside.
n. an enclosed area of land, typically containing a lawn or garden, situated at the rear of a residential property.
The children are playing in the backyard.
We decided to host a small barbecue in our backyard since the weather was so warm.
While the front of the house remains formal and manicured, the backyard serves as a private sanctuary where the family grows organic vegetables and keeps a small compost pile.
From back + yard.
Usage
Commonly used in North American English; British English speakers typically use 'back garden' for the same space.