IPA: //rɪˈbʌtən//
KK: /rɪˈbʌtən/
To fasten something again using buttons.
She had to rebutton her coat after it came undone.
Past: rebuttoned
Past Participle: rebuttoned
Rebutton → It is formed from "re-" (meaning again) and "button" (from Old French *bouton*, meaning a small knob or fastener). The word "rebutton" means to fasten something again with a button.
Think of fastening something 'again' ('re-') with a 'button' — that's why rebutton means to button it again.