The volume left at the top of a filled container (bottle or jar or tin) before sealing

Usage examples of headspace.

You wanta know what happened, you gotta climb in and share some headspace with us.

They walked through passageways, the light of his small flashlight showing the way, ducking through the short headspace of the doors and stepping over their lower edges.

Qureshi, and went back to her studies on headspace capture and noninvasive tissue sampling.

We'd need to clear the mail room workers for VOS Project Access and make them Headspaces and such, and we know that you don't want anyone else in on the project--"

Then, in headspace, I felt the firm hand of my ego agent on the back of my neck, lifting me above the swirling advertisements, the dizzying dance of thousands of stock prices, and the casual emergencies of work and memos and updated job queues.

In headspace, My Pet Dog scuttled forward and stared at the copter's scheduling systems with his puppy-dog eyes.