A mischievous imp? Someone small and somewhat clever in the midst of causing small but somewhat clever trouble, I would think. As an aside, that little phraselet isn't vintage slang. It isn't even slang. It's just words. Look 'em up!
Imp
Imp
The girl was very mischievious
espiègle
urchins
because he is very mischievious and is full of crimes
because he is very mischievious and is full of crimes
Katherine Imp's birth name is Katherine Marie Imp.
Yes. He is fun-loving, playful, and gets into trouble often.
It's very naughty/ It's very mischievious
imp. of Reach., imp. of Reck, to care.
Imp Kerr was born in 1980.