Greet a shower of ice (4)
I believe the answer is:
hail
I believe this clue is a triple definition!
'greet' is the first definition.
(I know that hail is a more specific form of greet)
'a shower' is the second definition.
(I have seen 'Cold shower' mean 'hail' so perhaps 'shower' could also mean 'hail')
'of' acts as a link.
'ice' is the third definition.
(thesaurus)
(Other definitions for hail that I've seen before include "Greeting - falling stones" , "Icy precipitation" , "Welcome - cold shower" , "Precipitating ice pellets" , "Precipitation of ice pellets" .)