Coarse ground initially wet (6)
I believe the answer is:
grainy
'coarse' is the definition.
(I've seen this before)
'ground initially wet' is the wordplay.
'initially' suggests taking the first letters.
'wet' becomes 'rainy' ('rainy' can be similar in meaning to 'wet'**).
The first letter of 'ground' is 'g'.
'g'+'rainy'='GRAINY'
(Other definitions for grainy that I've seen before include "Granular" , "Gritty" , "gravelly" , "Old still can be this" , "(Of photo) having low resolution" .)