Meaning of the word "granny flat" in English

What does "granny flat" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

granny flat

US /ˈɡræni flæt/
UK /ˈɡræni flæt/

Noun

a small self-contained living unit, typically built on the grounds of a larger family home, suitable for an elderly relative

Example:
My parents built a granny flat for my grandmother to live in.
The property includes a main house and a separate granny flat.