noun
controller
kuhn-TROH-luh
noun
1
A handheld device used to operate a video game or machine.
"He plugged in a second controller so his friend could play too."
2
A senior finance officer who oversees a company's accounts.
"The company's controller reviewed every department's budget."
3
A device or system that regulates the operation of a machine.
"A small controller adjusts the thermostat automatically."
How to Use Controller
Learner’s notesIn plain EnglishA device for operating something, or the person/system that oversees and regulates it.
Common pairings
game controller
financial controller
flight controller
Word Forms
controllers plural
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He plugged in a second _____ so his friend could play too.
Etymology
From Anglo-Norman contreroulour, from Medieval Latin contrarotulator — a doublet of comptroller, and formed from control plus -er.