Twin helps in moving furniture (6)
I believe the answer is:
castor
This could be a double definition.
'twin helps' is the first 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 can't see?
'moving furniture' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'in' acts as a link.
Can you help me to learn more?
(Other definitions for castor that I've seen before include "Chair wheel" , "Oil beloved by parents of old" , "excellent once at the Gabba" , "Twin to Pollux" , "Powdered sugar" .)