Meaning of the word "stay in touch" in English

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

stay in touch

US /steɪ ɪn tʌtʃ/
UK /steɪ ɪn tʌtʃ/

Idiom

to maintain communication with someone

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