rewinder
🇺🇸
/ri'waɪndə/
🇬🇧
/ri:'waɪndə/
A gadget for rolling something back to where it started, like film or tape.
The photographer used a rewinder to go over the old photos.
Someone who changes their mind or goes back on what they said.
He's a rewinder; he promised to help but then changed his mind.