ἰδιόστολος

ον
A. equipped at one's own expense, τριήρης Plu. Alc. 1; hired for one's own use, πλοῖον Ath. 12.521a, cf. Philostr. VA 5.20; ἰ. πλεῦσαι sail in one's own ship, Plu. Thes. 26.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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