A colonnade surrounding a courtyard, temple, etc., or the yard enclosed by such columns.
A sacred roofed courtyard with a central pillar (the potomitan), used as a space for voodoo ceremonies, either alone or as an adjunct to an enclosed temple or altar-room.
A porch surrounded by columns.
Quadrilateral.
An aspect of two planets with regard to the Earth when they are distant from each other ninety degrees, or a quarter-circle.