Still found in tumbledown attics (6)
I believe the answer is:
static
'still' is the definition.
(static can mean still or not moving)
'in tumbledown attics' is the wordplay.
'attics' can be anagrammed to 'STATIC'.
Though, I'm not clear how this is indicated.
'found' acts as a link.
Can you help me to learn more?
(Other definitions for static that I've seen before include "Still, unchanging" , "Still - type of electricity" , "Inactive, motionless" , "Not moving - electrical interference" , "Lacking change" .)