A free description of desert (4)
I believe the answer is:
arid
'description of desert' is the definition.
'arid' can be an answer for 'desert' (thesaurus). I am not certain of the 'description of' bit.
'a free' is the wordplay.
'free' becomes 'rid' (synonyms).
'a'+'rid'='ARID'
Can you help me to learn more?
(Other definitions for arid that I've seen before include "Very dry, having little rain" , "Lacking sufficient rainfall" , "Dry and parched, as with regions" , "Dry, devoid of interest" , "Drought-hit" .)