Suppress for a time the files assembled about it (6)
I believe the answer is:
stifle
'suppress' is the definition.
(I've seen this before)
'a time the files assembled about it' is the wordplay.
'a time' becomes 't'.
'assembled' indicates an anagram.
'about it' means one lot of letters goes inside another.
'files' is an anagram of 'sifle'.
't' going within 'sifle' is 'STIFLE'.
'for' acts as a link.
(Other definitions for stifle that I've seen before include "Repress - asphyxiate" , "Part of animal's leg" , "Have difficulty breathing" , "Suppress or suffocate" , "Smother, suffocate" .)