Pronunciation: (blok), [key]
1. a group of persons, businesses, etc., united for a particular purpose.
2. a group of legislators, usually of both major political parties, who vote together for some particular interest: the farm bloc.
3. a group of nations that share common interests and usually act in concert in international affairs: the Soviet bloc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.