See the stormy sea, for instance (4)
I believe the answer is:
case
'instance' is the definition.
(synonyms)
'see the stormy sea' is the wordplay.
'see' becomes 'c' (the word for the letter, according to Chambers).
'the stormy' indicates anagramming the letters (stormy suggests disruption).
'sea' is an anagram of 'ase'.
'c'+'ase'='CASE'
'for' is the link.
(Other definitions for case that I've seen before include "Patient; bag" , "Legal action; container" , "Outer shell" , "Detective work" , "Instance - lawsuit" .)