Adjective

1. of, relating to, or being an element (as opposed to a compound)
2. basic, fundamental or elementary
3. of the ancient supposed elements of earth, air, fire and water
4. of, or relating to a force or nature, especially to severe atmospheric conditions

Noun

1. A creature (usually a spirit) that is attuned with, or composed of, one of the classical elements: air, earth, fire and water. They sometimes have unique proper names and sometimes are referred to as Air, Earth, Fire, or Water.