You look out that door, you'll see maybe five other empty slots.

Those empty slots could actually be doing some useful work.

I pulled beyond the empty slot and backed up into it.

It happens I have an empty slot for a special duty assignment.

He spotted her and found an empty slot with three cars in between.

Landing in each empty slot was worth an additional $5,000.

Children for node will be found at the very first empty slot.

They found my account, and it said, oh, you have two free empty slots.

No computer program could keep him from noticing one empty slot.

The central computer would process the data and create a map showing empty slots.