Definition of "backfisch"
noun
plural backfische or backfisches
A teenage or late-adolescent girl.
Quotations
I knew, of course, it was but an innocent game on her part, a bit of backfisch foolery in imitation of some simulacrum of fake romance, […]
1955, Vladimir Nabokov, Lolita, 1st American edition, New York, N.Y.: G[eorge] P[almer] Putnam’s Sons, published August 1958, part 1, page 115