Be afraid to pack the globe in it and don't (7)
I believe the answer is:
forbear
'don't' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
'be afraid to pack the globe in it' is the wordplay.
'be afraid' becomes 'fear' (I've seen this before).
'to pack the globe' becomes 'orb' (I can't justify this - if you can you should give a lot more credence to this answer).
'in it' means one lot of letters goes inside another.
'fear' enclosing 'orb' is 'FORBEAR'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for forbear that I've seen before include "Hold back" , "Abstain" , "Be patient" , "Refrain from doing something" .)