Claw oddly scratched floor coated with bronze (5)
I believe the answer is:
talon
'claw' is the definition.
(talon is a kind of claw)
'oddly scratched floor coated with bronze' is the wordplay.
'oddly scratched' means one should take alternating letters (letters in odd-numbered positions removed).
'coated with' indicates putting letters inside.
'bronze' becomes 'tan' (both can mean to get a sun tan).
The alternate letters of 'floor' are 'lo'.
'lo' inserted into 'tan' is 'TALON'.
(Other definitions for talon that I've seen before include "hunting hook" , "Large claw" , "Bird of prey's claw" , "Eg, an eagle's claw" , "a gripping one" .)