Several Hebrew month names carry an accepted native gloss (Adar, mighty; Av, father; Elul, search or inquiry; Iyar, blossoming), already recorded on this atlas. Kislev, Shevat, Tevet and, separately, the deity name Tammuz do not: their Babylonian origin is well established but no settled etymology for the specific Hebrew forms is recorded in the sources consulted for this pass.
What would resolve this An Assyriological or comparative Semitic source tracing each Babylonian calendar-month name to its own root meaning, matched against the accepted glosses already recorded for the other months in the same cycle.
OpenAssyriology and comparative Semitic philologyMichael Berenbaum and Fred Skolnik (eds.), Encyclopaedia Judaica, 2nd edition