education or instruction in the fundamentals of a field of knowledge
He lacks the foundation necessary for advanced study. A good grounding in mathematics.
source: WordNet 3.0
fastening electrical equipment to earth
source: WordNet 3.0
The act, method, or process of laying a groundwork or foundation; hence, elementary instruction; the act or process of applying a ground, as of color, to wall paper, cotton cloth, etc.; a basis.
