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."