Worthless newspaper one may read in Prague? (3)
I believe the answer is:
rag
'worthless newspaper' is the definition.
(I've seen this in another clue)
'one may read in prague?' is the wordplay.
'one may read in' indicates the answer is hidden within the clue.
'RAG' is hidden in the letters of 'prague'.
(Other definitions for rag that I've seen before include "you lose in temper?" , "Scrap; one lost by the angry" , "Cloth for wiping" , "Torn piece of cloth or university japes" , "Group of colts" .)