Henry, say, raving about holding a tailless cat (9)
I believe the answer is:
navigator
'a tailless cat' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'henry say raving about holding' is the wordplay.
'henry say' becomes 'ato' (I can't explain this - if you can you should believe this answer much more).
'about' indicates an anagram.
'holding' means one lot of letters goes inside another.
'raving' is an anagram of 'navigr'.
'ato' going within 'navigr' is 'NAVIGATOR'.
Can you help me to learn more?
(Other definitions for navigator that I've seen before include "For example, Henry" , "Assistant to driver" , "Co-driver" , "Marine explorer" , "One directs the course, of a ship say" .)