Meaning of the word "pitch black" in English

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

pitch black

US /ˌpɪtʃ ˈblæk/
UK /ˌpɪtʃ ˈblæk/

Adjective

extremely dark; completely black

Example:
The night was pitch black, and I couldn't see anything.
Inside the cave, it was pitch black.