"young girl," 1670s, playful or diminutive form of miss (n.2), at first chiefly among servants.
"lewd, wanton woman" (mid-14c.); later "a giddy, romping girl;" of unknown origin; compare gig (n.1).
"serving as a model; worthy to serve as an exemplar," 1844, from model (n.). Model railway is by 1864.
in reference to Egypt and other nearby regions, "dancing-girl, belly-dancer," 1814, perhaps from Arabic almah (fem. adjective), "learned, knowing," in reference to their training, from alama "to know." Or perhaps from a Semitic root meaning "girl" (source also of Hebrew alma "a young girl, a damsel"). Her occupation was performance to amuse company in wealthy private homes and to sing at funerals, with higher status than the ghawazee (dancing girls), but the word was used broadly in English.