An indeterminate noun referring to a female (usually young) whom the speaker does not know
term would not be used in reference to anyone that the speaker is presumed to have more
than a passing aquaintance with.
"Did you get the notes from the class you missed?"
"Yeah, this one chippie
from the other section lent me hers."
"who's that in the picture
back in the day."
"So, I was sitting there, minding my own business, when this chippie
comes in and starts causing all kinds of trouble..."