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 WIRE. : the wire in a three-wire distribution system usually required to be grounded for safety of both linemen and householders. 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.ote that some information is displayed differently in the Unabridged. To access the complete Unabridged Dictionary, with an additional 300,000 words that aren't in our free dictionary, start a free trial.