The Online Etymology Dictionary suggests it comes from a Dutch and Low German root, similar to slice, especially a thin slice. So a "slip" of a girl is a slight (thin) girl. They record that the first known use in printed English was in 1582.
The idiom "to coin a phrase" means to invent or originate a new phrase or expression. It is often used when someone comes up with a clever or witty saying that becomes popular.
No, but it is slightly informal, not to be used in formal writing except as dialogue.
It translates from Spanish to mean my naughty girl.
"Una menina" is a phrase in Spanish that translates to "a girl" in English. It is typically used to refer to a young female child.
"Chica más fina" is a Spanish phrase that can be translated to "finest girl" in English. It is often used to describe a girl who is elegant, sophisticated, or of high quality.
concerning a human female
I don't understand what you mean by "connipition" since the question lacks clarity.
The idiom "to coin a phrase" means to invent or originate a new phrase or expression. It is often used when someone comes up with a clever or witty saying that becomes popular.
It's just a funny thing to say when helping someone to get to their feet. I can't find the etymology of the phrase. I suspect it's just a dialect way of saying "up you get" or "up you come."
A relevant component be it for a thing, solution or movement.
eat out a girl's thing
When one uses the phrase "Moving swifter" than another thing, they might mean moving faster, easily and such, than another thing. This phrase isn't very commonly used, though.
The word impertinent can mean rude, brash, or lacking respect. So, the phrase 'impertinent young girl' may mean a girl that is either brash or rude.
One thing girl YES she is so mean!
Then he has a thing for you girl.
An American boxer named Norman Selby (1873-1940) adopted "Kid McCoy" as his professional name and used the phrase "The Real McCoy" to distinguish himself from another fighter named "McCoy." Although not certain, this appears to be the origin of the phrase, which expanded into American English to mean "the genuine article."
When the first thing he notices in a girl is her eyes it means that he loves her deeply.