vlastPronunciation: /vlast/Definition of vlast noun (plural vlasti /-ti/) [mass noun] (in countries of the former Soviet Union) political power: the council represented the real vlast, the real power behind the front men in public office (the vlasti) the government or the establishment: policemen kept the centre lane clear of traffic for the exclusive use of the vlastiOrigin:Russianvlast in other Oxford dictionaries Definition of vlast in the US English dictionary