Twin actors, possibly? (6)
I believe the answer is:
castor
'twin' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'actors possibly?' is the wordplay.
'possibly?' is an anagram indicator (I've seen 'possibly' mean this).
'actors' anagrammed gives 'CASTOR'.
Can you help me to learn more?
(Other definitions for castor that I've seen before include "for wheel? Yes and no" , "Powdered sugar" , "Trolley wheel" , "Small swivelled wheel fixed to each leg of a piece of furniture" , "Roller on chair" .)