a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. one of a set of cube-shaped pieces of wood, plastic, or the like, used as a child's toy in building. a mold or piece on which something is shaped or kept in shape: a hat block.
Neutral powers during World War II. The neutral powers were countries that remained neutral during World War II. Some of these countries had large colonies abroad or had great economic power.
The definition of neutral is not taking part in a fight or war or having very little color. 1  An example of neutral is a person who does not take sides in an argument between two friends.2  An example of neutral is the color tan.rigin of neutral. 1  a nation not taking part in a war or conflict; neutral power. 2  a neutral person or a citizen of a neutral country. 3  a neutral color. 4  Mech. a disengaged position of gears, in which they do not transmit power from the engine to the operating parts.