It made a lot of noise for nothing, being said to have a sore tail (8)
I believe the answer is:
dinosaur
'it made a lot of noise' is the definition.
The definition suggests a singular noun which matches the answer.
'nothing being said to have a sore tail' is the wordplay.
I cannot really see how this works, but
'nothing' could be 'no' (similar in meaning) and 'no' is found within the answer.
an anagram of 'said' is 'disa' which is present in the left over letters.
The remaining letters 'ur' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for dinosaur that I've seen before include "Old-fashioned type" , "Extinct monster like Barney, children's TV pal" , "Extinct reptilian animal" , "Prehistoric monster from Jurassic era" , "Reptile is around, not really" .)