block. 1  a solid mass of wood, stone, etc., usually with one or more flat or approximately flat faces. 2  a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. 3  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. a piece of wood used in the art of making woodcuts or wood engravings. Printing. the base on which a plate is mounted to make it type-high.
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.
The second wire (neutral) is the car's body, also known as the ground, which carries electricity back to the battery to complete the circuit. This is what we mean by negative ground.. Most automotive electrical systems are negative ground, which means the negative battery post is connected to the body or ground..