Controller Definition

kən-trōlər

controllers

noun

controllers

A person or device that controls.

Webster's New World

The chief accounting officer with responsibility for internal auditing, as in a business, government (usually sp. comptroller), or institution.

Webster's New World

A regulating mechanism, as in a vehicle or electric device.

American Heritage

(nautical) An iron block, usually bolted to a ship's deck, for controlling the running out of a chain cable. The links of the cable tend to drop into hollows in the block, and thus hold fast until disengaged.

Wiktionary

Synonyms:

Other Word Forms of Controller

Noun

Singular:

controller

Plural:

controllers

Origin of Controller

From Middle English countreroller, from Anglo-Norman countrerolleour, from Old French contrerelleor (French contrôleur), from Medieval Latin contrārotulātor, from *contrārotulāre (from which control). Equivalent to control +‎ -er.

From Wiktionary