One stays in bed when working (6)
I believe the answer is:
anchor
'working' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'one stays in bed' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is located in the answer.
This explanation may well be incorrect...
'when' acts as a link.
Can you help me to learn more?
(Other definitions for anchor that I've seen before include "Source of stability" , "Rear person in a tug-of-war ( 6 )" , "Fix securely" , "Holding device for ship" , "Ship's fluke" .)