controller has definitions from the fields of accounting,business
1
[ noun ] (accounting,business) someone who maintains and audits business accounts

Used in print

(Robert A. Futterman, The Future of Our Cities....)

Moreover , the cost of operations is always high in any new store , as the conservative bankers who act_as controllers for retail giants are beginning to discover .

2
[ noun ] a person who directs and restrains

Synonyms

restrainer

3
[ noun ] a mechanism that controls the operation of a machine

Synonyms

control

Examples

"the speed control on his turntable was not working properly" "I turned the controls over to her"

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