To surround someone, as to impede their movement.(verb)
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Use "close down" in a sentence
"Possible Motives: Trying to get Lee to drop out so he would become the number one GTT pledge; revenge on Dr. Darity for threatening to close down the frats."
"Then climbing the Cristo Couloir on Friday with Janet, skiing Sunday to close down Ajax for the season, and starting all over next Wednesday with a trip to ski Mt."
"They close down one lane of traffic for emergency vehicles, and as we slow to a bumper-to-bumper crawl, these black kids run up to the bus windows with their cell phone cameras to see if they can take pictures of the dead body, the three-hundred-dollar sneakers poking out from under the sheet a giveaway of how old these corpses are."