Roar and bluster about the Spanish (6)
I believe the answer is:
bellow
'roar' is the definition.
(I know that roar can be written as bellow)
'bluster about the spanish' is the wordplay.
'bluster' becomes 'blow' (I can't explain this - if you can you should believe this answer much more).
'about' means one lot of letters goes inside another.
'the spanish' becomes 'el' ('the' in Spanish).
'blow' going around 'el' is 'BELLOW'.
'and' is the link.
Can you help me to learn more?
(Other definitions for bellow that I've seen before include "Deep roar as of bull" , "Roar loudly" , "Shout; Saul --, novelist" , "Yell" , "Roar, shout" .)