Trades off stamps (6)
I believe the answer is:
treads
'stamps' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'trades off' is the wordplay.
'off' indicates anagramming the letters.
'trades' with letters rearranged gives 'TREADS'.
Can you help me to learn more?
(Other definitions for treads that I've seen before include "Puts the foot down" , "mates" , "Steps, walks" , "Stared at tyre surfaces" , "Sets the foot down." .)