Meaning of the word "keep something dark" in English

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

keep something dark

US /kiːp ˈsʌmθɪŋ dɑːrk/
UK /kiːp ˈsʌmθɪŋ dɑːk/
"keep something dark" picture

Idiom

to keep something secret; to not tell anyone about something

Example:
We need to keep this project dark until the official announcement.
She asked me to keep her plans dark from her family.