Danes designed a chair (5)
I believe the answer is:
sedan
'a chair' is the definition.
(sedan chair is a type of chair)
'danes designed' is the wordplay.
'designed' indicates an anagram (designed with the letters).
'danes' is an anagram of 'SEDAN'.
(Other definitions for sedan that I've seen before include "Type of chair that's carried" , "Old carrying chair" , "Enclosed chair" , "Type of chair - battle" , "outmoded form of transport" .)