Longman Dictionary of Contemporary English homepage

controller

 noun
     
Related topics: Finance
con‧trol‧ler [countable]
1BF someone who is in charge of a particular system, organization, or part of an organization:
air-traffic controllers
2 also comptroller formalBF someone who is in charge of the money received or paid out by a company or government department
Definition from the Longman Dictionary of Contemporary English
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