Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having four equal sides and four right angles; square.
  • adj. Marked by firm, unwavering conviction or expression; forthright: a foursquare refusal to yield.
  • adv. In a forthright manner; squarely.
  • n. A child's game in which each of four players stands in one of four boxes drawn on the ground in a two-by-two grid and must bounce a ball into another player's box without holding the ball or stepping out of bounds.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having four equal sides; square.
  • adj. Solid, robust.
  • adj. Pertaining to a four-square cipher.
  • adj. A boxy style of domestic architecture with four rooms to a floor, one of which is usually a stair hall.
  • adj. Pertaining to the International Church of the Foursquare Gospel.
  • n. Alternative form of four square.
  • n. a four-square cipher

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having four sides and four equal angles.

from The Century Dictionary and Cyclopedia

  • Having four sides and four angles equal; quadrangular: as, a foursquare altar.
  • n. A figure with four equal sides.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adv. in a square position
  • adj. characterized by firm and unwavering conviction
  • adv. with firmness and conviction; without compromise
  • n. (geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon

Etymologies

From four +‎ square. (Wiktionary)

Examples

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  • This might be my favorite game from middle school.

    December 11, 2008