Greeting of bravery (3)
I believe the answer is:
ave
'greeting' is the definition.
(I've seen this before)
'of bravery' is the wordplay.
'of' says the answer is hidden in the clue.
'AVE' is hidden within 'bravery'.
(Other definitions for ave that I've seen before include "Hail in graveyard." , "Hail as to Caesar" , "Roman greeting" , "Latin greeting" , "Welcome" .)