What does "controller" mean?

Controller: An officer appointed to keep a counter register of accounts, or to examine, rectify, or verify accounts. [More commonly written controller.]

Additional senses

  1. 2.(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.

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