（ἑταῖροι, “comrades”). The designation
of all free Macedonians who were ready to join in the defence of their country; especially the
noblemen who composed the heavy cavalry, as contrasted with the infantry (πεζεταῖροι) of the royal guard.
Harry Thurston Peck. Harpers Dictionary of Classical Antiquities. New York. Harper and Brothers. 1898.
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