Lath n.; pl. Laths A thin, narrow strip of wood, nailed to the rafters, studs, or floor beams of a building, for the purpose of supporting the tiles, plastering, etc. A corrugated metallic strip or plate is sometimes used.
Lath brick, a long, slender brick, used in making the floor on which malt is placed in the drying kiln. Lath nail a slender nail for fastening laths.