Needing salt, maybe (3)
I believe the answer is:
icy
'needing salt maybe' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for icy that I've seen before include "Very cold, hostile" , "Distant - freezing" , "Frosty, arctic" , "unsympathetic" , "Freezing cold" .)