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Hence, anything which is square, or nearly so; as:

ally by the middle, as distinguished from fore-and-aft sails; thus, a ship and a brig are square-rigged vessels.

Having the toe square. Obsolete as fardingales, ruffs, and square-toed shoes. V. Knox.

A precise person; -- used contemptuously or jocularly. Thackeray.

In a square form or manner.

The quality of being square; as, an instrument to try the squareness of work.

One who, or that which, squares.

A metal covering plate which passes over the trunnions of a cannon, and holds it in place.

Having four sides and four equal angles. Sir W. Raleigh.

See under T.

Having a cross section in the form of an equilateral triangle; -- said especially of a kind of file.

joiners, etc., for laying off right angles off right angles, and testing whether work is square.

One of the tiles or squares of a tessellated pavement; an abaculus.

A piece of land, containing 160 square rods, or 4,840 square yards, or 43,560 square feet. This is the English statute acre. That of the United States is the same. The Scotch acre was about 1.26 of the English, and the Irish 1.62 of the English.

A small square shield, formerly worn on the shoulders of knights, -- being the prototype of the modern epaulet. Fairholt.

A raised structure (as a square or oblong erection of stone or wood) on which sacrifices are offered or incense burned to a deity. Noah builded an altar unto the Lord. Gen. viii. 20.

A square of white linen worn at first on the head, but now about the neck and shoulders, by priests of the Roman Catholic Church while saying Mass.

A silicate of aluminium, occurring usually in thick rhombic prisms, nearly square, of a grayish or pale reddish tint. It was first discovered in Andalusia, Spain.

A mineral relating to the zeolites, usually occurring in square prisms or octahedrons with pearly luster on the cleavage surface. It is a hydrous silicate of calcium and potassium.

nsurable only in power, as between sq. root2 and 1, or between the diagonal and side of a square.