Capital in Czechoslovakia? (4)
I believe the answer is:
oslo
'capital in czechoslovakia?' is the definition.
(I've seen this in another clue)
'in czechoslovakia?' is the wordplay.
'in' indicates a hidden word.
'OSLO' can be found hidden inside 'czechoslovakia'.
(Other definitions for oslo that I've seen before include "Norwegian capital" , "Location" , "European capital city (found in Czechoslovakia!)" , "European capital in go-slow" , "where Ibsen lived under another name" .)