Danes designed a seat (5)
I believe the answer is:
sedan
'a seat' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'danes designed' is the wordplay.
'designed' indicates an anagram (designed with the letters).
'danes' is an anagram of 'SEDAN'.
Can you help me to learn more?
(Other definitions for sedan that I've seen before include "Andes (anag.)" , "Covered chair carried between poles" , "Saloon car (US)" , "American car" , "Old portable chair for Danes" .)