Trades badly in stamps (6)
I believe the answer is:
treads
'stamps' is the definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'trades badly' is the wordplay.
'badly' indicates an anagram (letters in the wrong order).
'trades' anagrammed gives 'TREADS'.
'in' is the link.
Can you help me to learn more?
(Other definitions for treads that I've seen before include "mates" , "Sets the foot down." , "Stared at tyre surfaces" , "Steps, walks" , "Puts the foot down" .)