Middle-earth is the setting of much of J. R. R. Tolkien's legendarium. The term is equivalent to the term Midgard of Norse mythology, describing the human-inhabited world, i.e. the central continent of world of Tolkien's imagined mythological past. Tolkien's most widely read works, The Hobbit and The Lord of the Rings take place entirely in Middle-earth, and Middle-earth has also become a short-hand to refer to the legendarium or its "fictional-universe".
Within his stories, Tolkien translated the name "Middle-earth" as Endor (or sometimes Endórë) and Ennor in the Elvish languages Quenya and Sindarin respectively, sometimes referring only to the continent that the stories take place on, with another southern continent called the Dark Land.
Middle-earth is the central continent of Earth (Arda) in an imaginary period of the Earth's past (Tolkien placed the end of the Third Age at about 6,000 years before his own time), in the sense of a "secondary or sub-creational reality". Its general position is reminiscent of Europe, with the environs of the Shire intended to be reminiscent of England (more specifically, the West Midlands, with Hobbiton set at the same latitude as Oxford).
I know the drill
You got your ball and chain
It holds you down, the circle round
This story stays the same
It won't be long
And then your heart is frozen
The time has come to break away
You've got it all
What makes you hesitate?
Don't just wait for things
To blow up in your pretty face
Lift the weight
Try not to let it slip away
And you may find yourself again
I feel people just don't know you like I do
Why you're making it so hard to see
When there's something wrong
It goes on and on
I know the drill
You've got your ball and chain
I found out the second round
That some things never change
Open my eyes
And let the days come over me
And maybe it will go away
I feel people just don't know you like I do
Why you're making it so hard to see
When there's something wrong
It goes on and on
You'll see not everybody's here
To break your heart
So there is a price to pay
To be someone you're not
I know the drill
You've got your ball and chain
I found out the second round
That some things never change
Open my eyes
And let the days come over me