Meaning of the word "a brown study" in English

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

a brown study

US /ə braʊn ˈstʌd.i/
UK /ə braʊn ˈstʌd.i/
"a brown study" picture

Idiom

a state of deep thought or contemplation, often with a melancholic or serious mood

Example:
He was in a brown study, oblivious to the bustling market around him.
Her sudden silence suggested she had fallen into a brown study.