Get out of bed correctly with a straight back (7)
I believe the answer is:
upright
'a straight back' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'get out of bed correctly' is the wordplay.
'get' is a charade indicator (letters next to each other).
'out of bed' becomes 'up' (synonyms).
'correctly' becomes 'right' (synonyms).
'up' next to 'right' is 'UPRIGHT'.
'with' is the link.
Can you help me to learn more?
(Other definitions for upright that I've seen before include "Vertical, erect" , "Standing straight up" , "Un-grand piano" , "Keyboard instrument" , "Type of piano" .)