| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a chattering or flighty, light-headed person. |
A Russian word meaning “openness,” which describes the policy of Mikhail Gorbachev, premier of the former Soviet Union. The term refers to a general loosening of government control on all aspects of life in the Soviet Union, even to the point of permitting criticism of government policies.