Lat·tice n.
 1. Any work of wood, metal, plastic, or other solid material, made by crossing a series of parallel laths, or thin strips, with another series at a diagonal angle, and forming a network with openings between the strips; as, the lattice of a window; -- called also latticework.
    The mother of Sisera looked out at a window, and cried through the lattice.   --Judg. v. 28.
 2. Her. The representation of a piece of latticework used as a bearing, the bands being vertical and horizontal.
 Lattice bridge, a bridge supported by lattice girders, or latticework trusses.
 Lattice girder Arch., a girder of which the wed consists of diagonal pieces crossing each other in the manner of latticework.
 Lattice plant Bot., an aquatic plant of Madagascar (Ouvirandra fenestralis), whose leaves have interstices between their ribs and cross veins, so as to resemble latticework. A second species is Ouvirandra Berneriana. The genus is merged in Aponogeton by recent authors.


 Gird·er, n.
 1. One who, or that which, girds.
 2. Arch. & Engin. A main beam; a stright, horizontal beam to span an opening or carry weight, such as ends of floor beams, etc.; hence, a framed or built-up member discharging the same office, technically called a compound girder. See Illusts. of Frame, and Doubleframed floor, under Double.
 Bowstring girder, Box girder, etc. See under Bowstring, Box, etc.
 Girder bridge. See under Bridge.
 Lattice girder, a girder consisting of longitudinal bars united by diagonal crossing bars.
 Half-lattice girder, a girder consisting of horizontal upper and lower bars connected by a series of diagonal bars sloping alternately in opposite directions so as to divide the space between the bars into a series of triangles. --Knight.
 Sandwich girder, a girder consisting of two parallel wooden beams, between which is an iron plate, the whole clamped together by iron bolts.

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