The phrase "border wall" refers to a physical barrier built along a country's border to control the movement of people or goods entering or exiting the country. It is meant to stop unauthorized crossing and increase security. Full definition
These traits address notions of social barriers like the building of border walls, issues of race, land use, and other societal structures of exclusion. (whitewall.art)
I'm glad the federal government is addressing the most pressing concerns of the border region by building an incredibly essential border wall. (dotearth.blogs.nytimes.com)
White House officials reportedly have told key GOP leaders on Capitol Hill that President Donald Trump is open to striking a deal that would protect young immigrants from deportation in exchange for border wall funding as part of an upcoming spending bill. (nystateofpolitics.com)