Rotating cylinder made to bend inside pipe (9)
I believe the answer is:
treadmill
'rotating cylinder' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'made to bend inside pipe' is the wordplay.
'to bend' indicates anagramming the letters (I've seen 'bending' mean this).
'inside' indicates putting letters inside.
'pipe' becomes 'trill' (both can mean to sing as a bird).
'made' anagrammed gives 'eadm'.
'eadm' inserted within 'trill' is 'TREADMILL'.
Can you help me to learn more?
(Other definitions for treadmill that I've seen before include "Laborious routine" , "Routine activity" , "Wearisome routine" , "day-to-day grind" , "Dreary repetitive work" .)