Put away heads of syndicate that got into debt (6)
I believe the answer is:
stowed
'put away' is the definition.
(stowed away)
'heads of syndicate that got into debt' is the wordplay.
'heads of' says to take the initial letters.
'got into debt' becomes 'owed' (owed money).
The initial letters of 'syndicate that' is 'st'.
'st'+'owed'='STOWED'
(Other definitions for stowed that I've seen before include "Two Eds (anag.)" , "Packed or stored out of sight" , "Filled by packing tightly" , "loaded!" , "Tidily stored away" .)