changer
nounUK /ˈtʃeɪndʒə/
US /ˈtʃeɪndʒər/
A changer is a person or thing that makes something different.
The new teacher was a real changer in our classroom.
OTHER MEANINGS
2. A device that changes money into smaller coins or a different currency.
The machine by the door is a coin changer.
3. A person who changes something, such as clothes or a baby's diaper.
She is a quick changer when the baby needs a fresh diaper.
4. A record changer is a machine that plays several records one after another.
Grandpa still has his old record changer in the attic.