Terribly wet journalist gets material (5)
I believe the answer is:
tweed
'material' is the definition.
(tweed is a kind of material)
'terribly wet journalist' is the wordplay.
'terribly' indicates an anagram.
'journalist' becomes 'ed' (short for editor**).
'wet' anagrammed gives 'twe'.
'twe'+'ed'='TWEED'
'gets' is the link.
(Other definitions for tweed that I've seen before include "Rough material" , "Boundary river" , "Rough woollen cloth" , "Twilled cloth" , "Flower on border" .)