Poles holding on – on something that spins continuously (7)
I believe the answer is:
nonstop
'continuously' is the definition.
Both the answer and definition are adverbs. Maybe there's an association between them I don't understand?
'poles holding on on something that spins' is the wordplay.
'poles' becomes 'ns' (North and South poles).
'holding' indicates putting letters inside.
'on' means one lot of letters go next to another.
'something that spins' becomes 'top' (I can't justify this - if you can you should believe this answer much more).
'ns' placed around 'on' is 'nons'.
'nons'+'top'='NONSTOP'
Can you help me to learn more?
(Other definitions for nonstop that I've seen before include "Around the clock, continuous" , "Uninterrupted" , "Never-ending" , "without a break" , "Relentless" .)