Electrode n. : The path by which electricity is conveyed into or from a solution or other conducting medium; esp., the ends of the wires or conductors, leading from source of electricity, and terminating in the medium traversed by the current.

Example:
Can a battery Electrode can be substituted to a carbon brush in a condenser fan DC motor when it worn off ?

Taxonomy
electrode, anode, cathode, cell, Anode and cathode, Welding electrodes, electrons, electrochemical cell, free encyclopedia, negative electrode, counter electrode, alternating current, Michael Faraday, Primary cell, Secondary cell, working electrode, electrolyte, recharged.

Defination from the web:
electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte or a vacuum) ... Each electrode may become either the anode or the cathode depending on the voltage applied to the cell. ...