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

Source: wiktionary.org