Hide away where half of us get new hats (5)
I believe the answer is:
stash
'hide away' is the definition.
(I've seen this in another clue)
'half of us get new hats' is the wordplay.
'half of' means to take half the letters.
'get new' is an anagram indicator (get a new order of the letters).
'us' cut in half is 's'.
'hats' anagrammed gives 'tash'.
's'+'tash'='STASH'
'where' is the link.
(Other definitions for stash that I've seen before include "Secret hoard" , "Cache" , "(Hidden store of) drugs" , "drug store" , "Squirrel away" .)