Foursquare has 6 different meanings across 3 categories:
(geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon
"you can compute the area of a square if you know the length of its sides"
Alternative form of four square
Having four equal sides; square.
with firmness and conviction; without compromise
"he stood foursquare for religious liberty and toleration"
"dealt straightforwardly with all issues"