adjuster

noun
UK /əˈdʒʌstə/
US /əˈdʒʌstər/

A person or thing that makes something fit or work better.

The seat adjuster lets you move the chair up and down.


OTHER MEANINGS

2. A person who works out how much money an insurance company should pay for a loss.

The insurance adjuster came to look at the damaged roof.

3. A small device that changes how a machine or tool works.

He turned the adjuster on the lamp to make the light brighter.

4. A person whose job is to settle claims or disagreements.

The claims adjuster helped the two sides agree.