Rung up repeatedly on this, when given run on stage (10)
I believe the answer is:
stepladder
'rung up repeatedly on this when' is the definition.
The definition suggests a singular noun which matches the answer.
'run on stage' is the wordplay.
'run' becomes 'ladder' (both can mean a rip in tights).
'on' means one lot of letters go next to another.
'stage' becomes 'step' (I've seen this before).
'ladder' after 'step' is 'STEPLADDER'.
'given' is the link.
Can you help me to learn more?
(Other definitions for stepladder that I've seen before include "Short folding climbing frame" , "Painter's mate" , "Decorator's platform" , "Help for climber" , "Domestic climbing aid" .)