Outside of garden houses headless statues (6)
I believe the answer is:
gnomes
'statues' is the definition.
(garden gnomes)
'outside of garden houses headless' is the wordplay.
'outside of garden' becomes 'gn' (I am not sure about this - if you are sure you should believe this answer much more).
'houses' becomes 'homes' (homing is a kind of housing).
'headless' means to remove the first letter.
'homes' with its initial letter taken away is 'omes'.
'gn'+'omes'='GNOMES'
Can you help me to learn more?
(Other definitions for gnomes that I've seen before include "Zurich goblins" , "Legendary creatures" , "Ornamental garden figures" , "Legendary dwarfs" , "Snog me (anag)" .)