Yet it may be the single most effective weapon against sloppy medical care.

The single most important weapon in any country's defense against infections is its disease surveillance system.

Not a single weapon had a serial number on it.

Now they didn't have a single weapon among them.

So far no one's launched a single weapon at us.

"That man would not willingly put a single weapon in your hands."

Everyone present knew that a single weapon had turned the city into the crater.

Anybody inside would be able to guard the entrance with a single weapon.

They can be used as a single or double weapon.

How will we ever be able to prove that there is not a single illegal weapon in Iraq?