Definition of "Foursquare" :

noun: (geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon

adjective: characterized by firm and unwavering conviction

"A foursquare refusal to yield."

adverb: with firmness and conviction; without compromise

"He stood foursquare for religious liberty and toleration."

adverb: in a square position

"The building stood foursquare."