back‧yard , ˌback ˈyard /ˌbækˈjɑːd◂ $ -ˈjɑːrd◂/ noun [countable]

1. British English a small area behind a house, covered with a hard surface

2. American English an area of land behind a house, often covered with grass:
The old man grew vegetables in his backyard.

3. in sb’s own backyard informal very near where someone lives, works etc:
Americans would probably react differently to the war if it was in their own back yard.

4. not in my backyard used to say that you do not want something to happen near where you live
—backyard adjective [only before noun]:
a backyard pool

[TahlilGaran] Dictionary of Contemporary English ▲