East German radical opens liquor stand (7)
I believe the answer is:
rostrum
'stand' is the definition.
(thesaurus)
'east german radical opens liquor' is the wordplay.
'east german' becomes 'ost' ('east' in German).
'radical' becomes 'r' (chemistry abbreviation).
'opens' means one lot of letters goes inside another (one set of letters makes an 'opening' in another).
'liquor' becomes 'rum' (rum is a kind of liquor).
'ost'+'r'='ostr'
'ostr' inserted into 'rum' is 'ROSTRUM'.
(Other definitions for rostrum that I've seen before include "Platform for public speaking" , "Platform for public speakers" , "place for speaker" , "Raised platform" , "beak" .)