Hide from shower (4)
I believe the answer is:
pelt
I believe this clue is a double definition.
'hide' is the first definition.
(I know that hide can be written as pelt)
'shower' is the second definition.
(showers of rain may be said to pelt)
'from' acts as a link.
(Other definitions for pelt that I've seen before include "Skin - throw things at" , "Skin - bombard - hurry!" , "Subject to bombardment" , "Hide; rain" , "what rain might do" .)