selector
nounUK /sɪˈlɛktə/
US /sɪˈlɛktər/
A person or thing that picks someone or something.
The team selector chose the best players for the match.
SYNONYMS
OTHER MEANINGS
2. A device on a machine that lets you choose a setting.
Turn the selector to the 'hot' setting on the toaster.
3. A piece of computer code that picks which parts of a web page to style.
The CSS selector targets all the buttons on the page.
4. A switch that chooses which circuit or signal is connected.
He flipped the selector to switch the radio to another station.