STEP Greek Lexicon: μεγιστάν

μεγιστάν, -ᾶνος, ὁ

(μέγιστος) [in LXX chiefly for שַׂר, Jer.24:8, al.; רַבְרְבָן, Dan LXX TH Dan.5:23, al.; frequently in Sir (sing., Sir.4:7) ;]

usually pl., οἱ μ., the chief men, nobles (Manetho, FlJ, al.): Mrk.6:21, Rev.6:15 18:23.†

(AS)