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.
Definition of NEUTRAL CONDUCTOR. : the intermediate conductor in a three-wire electrical system usually grounded or maintained at zero potential.ADVERTISEMENT. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis. the intermediate conductor in a three-wire electrical system usually grounded or maintained at zero potential. ADVERTISEMENT.