empty space

noun5

1. •
   An unoccupied space where something may be stored

   • You can park your car in that empty space.
   • You can put the key in that empty space.
2. •
   An unoccupied area or volume.

   • The empty space at the sides of the page is called the "margin".
   • He spends all his time staring into empty space.
3. •
   Vacuum; a space containing nothing at all

   • Atoms are mostly empty space.
4. •
   (figurative) A feeling of longing for someone or something that is gone; a sense of a thing's absence.

   • It didn't seem possible that he wasn't going to be standing by the Dumpster, waiting for me at lunch, or meeting me in the science lab after school. I felt an empty space where my heart had been. — 1986
5. •
   Barren, desolate land, empty of life and people.