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Noun: controller  kun'trów-lu(r)
  1. Someone who maintains and audits business accounts
    - accountant, comptroller
  2. A person who directs and restrains
    - restrainer
  3. A mechanism that controls the operation of a machine
    "the speed controller on his turntable was not working properly";
    - control

Derived forms: controllers

Type of: bourgeois, businessperson, individual, mechanism, mortal, person, somebody, someone, soul

Encyclopedia: Controller, BBC Radio 4