Military Formations

noun A courtyard or open space enclosed by buildings, typically on a college campus.

• The university campus is designed with a beautiful quadrangle at its center.
• Let's meet at the quadrangle before heading to class.
• Hey, let's chill at the quad later.
• The company's organizational structure can be seen as a quadrangle of interconnected departments.

noun a line of people or things moving one behind the other

adjective arranged one behind the other in a line

• The students were instructed to walk in single file while on the field trip.
• Hey guys, let's walk in single file so we don't take up the whole sidewalk.
• We had to line up single file like a bunch of ducks following their mother.
• The team moved through the narrow passage single file, resembling a snake slithering through the grass.