Noticeable beating (8)
I believe the answer is:
striking
This might be a double definition.
'noticeable' is the first definition.
(I've seen this before)
'beating' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for striking that I've seen before include "Prominent" , "downing tools" , "Attracting attention by reason of being unusual" , "Impressive; refusing to work" , "means of putting pressure on employers" .)