A small, narrow conical connector for holding the ends of two or more electric wires that are to be connected without solder, typically made of plastic or ceramic and containing a means of mechanically securing the wires. [A trademark in the United States.]
Origin
1930s.
Definition of wire nut in US English:
wire nut
noun
US Electricity
A small, narrow conical connector for holding the ends of two or more electric wires that are to be connected without solder, typically made of plastic or ceramic and containing a means of mechanically securing the wires. [A trademark in the United States.]