What is the meaning of Lath?

A thin, narrow strip, fastened to the rafters, studs, or floor beams of a building, for the purpose of supporting a covering of tiles, plastering, etc.

Microscopic, needle-like crystals, usually of plagioclase feldspar, in a glassy groundmass

One of the sharp-edged, thick planks driven forward to hold back loose earth or mud when digging the way through for tunnelling or spiling. Also called a spill.

↑ Geological Digressions, "Glossary: Petrography and petrology"

To cover or line with laths.

Alternative form of lat (“staff; monumental pillar”).

Source: wiktionary.org