Meaning of the word "remaining one" in English

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

remaining one

US /rɪˈmeɪnɪŋ wʌn/
UK /rɪˈmeɪnɪŋ wʌn/

Phrase

the last item or person left from a group

Example:
After everyone else left, he was the remaining one.
We need to find the remaining one to complete the set.