noun pl. laths
- any of the thin, narrow strips of wood used in lattices or nailed to two-by-fours, rafters, etc. as a foundation for plaster, tiles, etc.
- any foundation for plaster, as wire screening or expanded metal
- laths collectively, esp. when used as a base for plaster
ME lathe (< OE *læthth, akin to OHG latta) & latte (< OE lætt, akin to ON latto)