Land and fit rear arm anew (5,5)
I believe the answer is:
terra firma
'land' is the definition.
('terra firma' can be a synonym of 'land')
'fit rear arm anew' is the wordplay.
'anew' indicates anagramming the letters.
'fit'+'rear'+'arm'='fitreararm'
'fitreararm' is an anagram of 'TERRA-FIRMA'.
'and' acts as a link.
(Other definitions for terra firma that I've seen before include "Solid earth - dry land" , "Solid earth (Latin)" , "Solid ground" , "Hard ground" .)