grīphus — Lewis & Short
grīphus, i, m., = gri=fos (a net; hence transf.),
I an intricate or puzzling question, a riddle, enigma (post-class. and very rare):
griphos dissolvere,Gell. 1, 4, 4; v. App. Flor. 9; Aus. Idyll. 11.