Some graceful nasal bones (5)
I believe the answer is:
ulnas
'bones' is the definition.
(I have seen 'Bones of arms ' mean 'ulnas' so perhaps 'bones' could also mean 'ulnas')
'some graceful nasal' is the wordplay.
'ULNAS' is hidden within the letters.
However, I am unsure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for ulnas that I've seen before include "Forearm bones" , "Bones of arms" .)