Bailly
ου (ὁ) Mykonos (auj. Mýkonos) une des Cyclades, ESCHL. Pers. 885 ; HDT. 6, 118 ; THC. 3, 29.
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LSJ
[ῠ], ἡ, Myconus, one of the Cyclades, Hdt. 6.118, etc. ; the people were said to be all bald, Lucil. 1211, Str. 10.5.9; whence (acc. to Donat. ad Ter. Hec. 440) the proverb μία Μύκονος ΄it΄s all one, all alike΄, Plu. 2.616b, Them. Or. 21.250c, Zen. 5.17 (with a different expl.), prob. cj. in Luc. DMort. 1.3; πάνθ’ ὑπὸ μίαν Μύκονον Str. l.c. (with a third expl., cf. Eust. ad D.P. 525); Adj. Μυκόνιος, α, ον, prov. M. γείτων, of a bad neighbour, Zen. 5.21 (Μηκώνιος codd., Μυκώνιος Phot., Suid.), cf. Cratin. 328, Com.Adesp. 439; also ἡ λεγομένη Μυκόνιος ἀγροικία Jul. Mis. 349d.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)