What is the meaning of Metalloid?

An element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially an elemental semiconductor.

The metallic base of a fixed alkali, or alkaline earth; applied to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined.

A nonmetal.

Of or relating to the metalloids.

Characteristic of the metal music genre.

Source: wiktionary.org