Crossword Genius

Called out robust greeting (4)

Ross

I believe the answer is:

hail

'greeting' is the definition.
(hail is a kind of greeting)

'called out robust' is the wordplay.
'called out' shows a homophone (sound like).
'robust' becomes 'hale' (in good health).
'hale' is a homophone of 'HAIL'.

(Other definitions for hail that I've seen before include "Old Roman salute, or frozen pellets" , "Stones from the sky" , "Greet loudly" , "Signal to and summon, say a taxi" , "Welcome - cold shower" .)

I've seen this clue in The Guardian.
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