Setter of puzzles at the heart of an airship (5)
I believe the answer is:
irish
'setter' is the definition.
(Irish setter is an example)
'puzzles at the heart of an airship' is the wordplay.
'puzzles' becomes 'rish' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the heart of' means to look at the middle letters.
'an airship' becomes 'blimp' (blimp is a kind of airship).
The central letter of 'blimp' is 'i'.
'rish' after 'i' is 'IRISH'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for irish that I've seen before include "Native to the Emerald Isle" , "Celtic language" , "Hi, Sir, become a national" , "Reddish-brown dog" , "Of this place" .)