Clipping of モダンガール.

age, era, period / date / a decade in a century

refinement, polish (cleanliness in performance or presentation)

be refined, be polished

(formal) Female third-person singular pronoun; she, her, girlfriend

(colloquial) a girlfriend (a female partner in a romantic relationship)

style / a woman's figure, a man's physique

(literary) they (about women or girls)

to hold, to carry something / to have, to possess / to hold up, to maintain

holding, possession / wear, durability