riddle--OE root rædan-- meaning: puzzling or mystifying.

riddle--OE root hriddel-- a coarse seive.. (or anything like that-- riddled with holes or errors..)

or

Poke--ONF -- related to pocket-- a bag or sack (as in a pig in a poke)

Poke--ME-- related to Poken-- to prod, jab, thrust.. (poke in the ribs, or poke in the eye..or even poke fun at..