A shout of "Well said!" (4)
I believe the answer is:
hail
'a shout' is the definition.
(thesaurus)
'well said' is the wordplay.
'well' becomes 'hale' (I've seen this in another clue).
'said' indicates a 'sounds like' (homophone) clue.
'hale' is a homophone of 'HAIL'.
'of' is the link.
(Other definitions for hail that I've seen before include "Icy precipitation" , "Precipitation - old greeting" , "Stones dropped" , "Greet; frozen rain" , "Welcome - sort of shower" .)