Sort of teas that fully satisfy (4)
I believe the answer is:
sate
'fully satisfy' is the definition.
(I've seen this before)
'sort of teas' is the wordplay.
'sort of' indicates anagramming the letters.
'teas' is an anagram of 'SATE'.
'that' is the link.
(Other definitions for sate that I've seen before include "Glut" , "Provide with more than enough" , "spicy meat" , "Fill to satisfaction" , "Fulfil to excess" .)