IPA: /rɪˈtɜrnər/
KK: /rɪˈtɜrnər/
A person who brings something back or runs back a ball that has been kicked or thrown.
The returner caught the ball and ran down the field.
To go back to a place or to give something back to someone.
After finishing the book, I decided to return it to the library.
Past: returned
Past Participle: returned
Returner → It is formed from "re-" (meaning again) and "turn" (from Old French *torner*, meaning to turn). The suffix "-er" indicates a person who performs an action. Thus, a returner is a person who turns back or comes back again.
Think of someone who comes back 'again' ('re-') and 'turns' ('turn') — that's why a returner is someone who returns.