Meaning of the word "keep in touch with" in English

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

keep in touch with

US /kiːp ɪn tʌtʃ wɪθ/
UK /kiːp ɪn tʌtʃ wɪð/

Idiom

to maintain communication or contact with someone

Example:
Let's promise to keep in touch with each other after graduation.
It's important to keep in touch with old friends.