What does "rod" mean?

Rod: (b) A kind of sceptor, or badge of office; hence, figuratively, power; authority; tyranny; oppression. "The rod, and bird of peace." Shak. (c) A support for a fishing line; a fish pole. Gay. (d) (Mach. & Structure) A member used in tension, as for sustaining a suspended weight, or in tension and compression, as for transmitting reciprocating motion, etc.; a connecting bar. (e) An instrument for measuring.

Additional senses

  1. 2.A measure of length containing sixteen and a half feet; -- called also perch, and pole. Black rod. See in the Vocabulary. -- Rods and cones (Anat.), the elongated cells or elements of the sensory layer of the retina, some of which are cylindrical, others somewhat conical.

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