block off

"Normally, microglia are looking for things like viruses or injury and secreting substances that block off the damage," she said.

Police have blocked off entrances and exits in an effort to compel the miners to come out.

Another neighbor drove her car directly through the Jensens property to escape the inferno, which had already blocked off the sole escape route.

I said it would be cool if the Sheriff’s Department blocked off Atlantic, but only if it allowed people to take it over, a la a block party.

Sheriff’s Department and California Highway Patrol had blocked off the intersection of Whittier and Atlantic boulevards in an effort to stymie cruising, but to no avail — cars merely did a U-turn on Hillview Avenue.