glas ‧ nost /ˈɡlæznɒst $ ˈɡlɑːsnoʊst/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Language: Russian ; Origin: 'openness' , from glas 'voice' ]
the ↑ policy begun by Mikhail Gorbachev in the USSR in the 1980s of allowing discussion of the country’s problems