Meaning of the word barmy in English

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

barmy

US /ˈbɑːr.mi/
UK /ˈbɑː.mi/

Adjective

crazy or foolish

Example:
He must be absolutely barmy to think he can climb that mountain alone.
That's a completely barmy idea!