Dry land or solid ground (5,5)
I believe the answer is:
terra firma
This clue is a double definition.
'dry land' is the first definition.
(synonyms)
'solid ground' is the second definition.
(synonyms)
(Other definitions for terra firma that I've seen before include "Solid ground" , "Hard ground" , "Solid earth (Latin)" , "Solid earth - dry land" .)