You see any product that calls itself an 'anti-perspirant' works by actually blocking the pores of your skin with chemicals.

I have some real "low pass" filters that actually block UV.

"This romantic song you sing yourself may actually block the voice of God that would guide you to simple happiness."

"Father, I can't arrest you unless you actually block the door," said one of the police officers.

In a nuclear war, the smoke, ash and other particulates swarming into the atmosphere could actually block the sun.

In other words, does it actually block ads rather than merely hiding them?

I'm glad these guys are getting grilled, but I have little hope that they'll actually block the merger.

But this meeting dealt in great detail with the highly technical disputes that are actually blocking a global trade pact.

The spokesman acknowledged that the authority "cannot actually block the merger."

A shadow, as of vast wings, occluded the sky without actually blocking the light.