Simple Definition of lath
: a long and thin piece of wood that is used in walls and ceilings to support plaster, tiles, etc.
Full Definition of lathplural
1 : a thin narrow strip of wood nailed to rafters, joists, or studding as a groundwork for slates, tiles, or plaster
2 : a building material in sheets used as a base for plaster
3 : a quantity of laths
Origin and Etymology of lath
Middle English, from Old English *læthth-; akin to Old High German latta lath, Welsh llath yard
First Known Use: 13th century
LATH Defined for Kids
Definition of lath for Students
: a thin strip of wood used (as in a wall) as a base for plaster
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