Meaning of the word "one another" in English

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

one another

US /wʌn əˈnʌðər/
UK /wʌn əˈnʌðər/

Pronoun

each other

Example:
They looked at one another and smiled.
We should help one another.