Outmoded about one in everything in bed (9)
I believe the answer is:
paillasse
'bed' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'outmoded about one in everything' is the wordplay.
'outmoded' becomes 'passe' (synonyms).
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'in' is an insertion indicator.
'everything' becomes 'all' (all things).
'i' put within 'all' is 'aill'.
'passe' going around 'aill' is 'PAILLASSE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for paillasse that I've seen before include "Bedding" , "straw bed" , "Maybe sleep on it" .)