μογοστόκος
-ον
[μογοσ- (to be taken as a relic of the acc. pl. of μόγος; cf. δικασπόλος) + τοκ-, τίκτω.
Hence pangs-generating, that brings on the woman's pains.' Or perh. μογο-, μόγος + στακ-, to stay.
Hence pangs-staying, that brings the woman relief from her pains.]
Epithet of εἰλείθυια or the εἰλείθυιαι Il. 11.270 (which seems to point to the first explanation), Il. 16.187, Il. 19.103.