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4 definitions found
 for controller
From The Collaborative International Dictionary of English v.0.48 :

  Controller \Con*trol"ler\, n. [From control, v. t.: cf. F.
     1. One who, or that which, controls or restraines; one who
        has power or authority to regulate or control; one who
        [1913 Webster]
              The great controller of our fate
              Deigned to be man, and lived in low estate.
        [1913 Webster]
     2. An officer appointed to keep a counter register of
        accounts, or to examine, rectify, or verify accounts.
        [More commonly written controller.]
        [1913 Webster]
     3. (Naut.) 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.
        [1913 Webster]
     4. (Elec.) Any electric device for controlling a circuit or
        system; specif.:
        (a) An electromagnet, excited by the main current, for
            throwing a regulator magnet into or out of circuit in
            an automatic device for constant current regulation.
        (b) A kind of multiple switch for gradually admitting the
            current to, or shutting it off from, an electric
            motor; as, a car controller for an electric railway
            [Webster 1913 Suppl.]
     5. (Mach.) A lever controlling the speed of an engine; --
        applied esp. to the lever governing a throttle valve, as
        of a steam or gasoline engine, esp. on an automobile.
        [Webster 1913 Suppl.]

From WordNet (r) 3.0 (2006) :

      n 1: someone who maintains and audits business accounts [syn:
           accountant, comptroller, controller]
      2: a person who directs and restrains [syn: restrainer,
      3: a mechanism that controls the operation of a machine; "the
         speed controller on his turntable was not working properly";
         "I turned the controls over to her" [syn: control,

From Moby Thesaurus II by Grady Ward, 1.0 :

  69 Moby Thesaurus words for "controller":
     Big Brother, CA, CPA, accountant, accountant general, actuary,
     auditor, bank accountant, bank examiner, boatswain, bookkeeper,
     boss, bursar, calculator, cashier, cashkeeper,
     certified public accountant, chamberlain, chartered accountant,
     chief, clerk, comptroller, control, cost accountant, cost keeper,
     curator, depositary, depository, financial officer, floor manager,
     floorman, floorwalker, foreman, gaffer, ganger, governor, head,
     headman, inspector, journalizer, liquidator, monitor,
     noncommissioned officer, overman, overseer, paymaster, proctor,
     purse bearer, purser, receiver, reckoner, recorder, registrar,
     regulator, servo control, servo regulator, sirdar, slave driver,
     steward, straw boss, subforeman, super, superintendent, supervisor,
     surveyor, taskmaster, treasurer, trustee, visitor

From The Free On-line Dictionary of Computing (30 December 2018) :

      Part of a computer, typically a separate circuit
     board, which allows the computer to use certain kinds of
     peripheral devices.  A disk controller is used to connect
     hard disks and floppy disks, a network controller is
     used for Ethernet.  Other controllers are: keyboard
     controller, interrupt controller and graphics controller.

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