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 a hidden word.
'RAG' can be found hidden inside '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" .)