podstawa

1. base (that upon which something stands)
2. base (lower part of a set of bones that make up a specific part of the skeleton)
3. base (lowest side of a triangle or other polygon)
4. base (lowest face of a cone, pyramid or other polyhedron laid flat)
5. base (element without which something can't exist)
6. base (that which may be the beginning, cause or justification of something) [with do (+ genitive) ‘to what’],
7. base (specific amount that is the starting point for some financial calculations)
8. basics (elementary knowledge in something)
9. basics (assumptions that give rise to some theory, science, concept)
10. base (that which one may place one's legs)