Loaves of crusty white bread hidden in loose, baggy trousers (8)
I believe the answer is:
bloomers
'loaves of crusty white' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'bread hidden in loose baggy trousers' is the wordplay.
'bread' becomes 'bloomer' (type of loaf of bread).
'hidden in loose baggy trousers' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'bloomer'+'s'='BLOOMERS'
Can you help me to learn more?
(Other definitions for bloomers that I've seen before include "Undergarments popularised by Amelia" , "Flora" , "Bread - mistakes - underwear" , "displayed in bed" , "Undergarment" .)