Comfortable furniture in airport initially changed (5)
I believe the answer is:
futon
'comfortable furniture' 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?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for futon that I've seen before include "Unsprung roll-up mattress" , "Mattress used as a bed or sofa" , "'Japanese mattress, can be folded (5)'" , "Japanese-style mattress" , "Japanese mattress with frame, a bed-couch" .)