means A hard, glossy coating that dries to a protective shine on wood, metal, or other surfaces, ranging from traditional tree-sap finishes to modern synthetic varnishes.

from From French 'lacre' and Portuguese 'lacca,' which trace back through Arabic 'lakk' to Sanskrit 'laksha' — the word for the resinous secretion of the lac insect, swarming in such vast numbers on host trees that 'laksha' also meant 'a hundred thousand.' That sticky red-brown residue, scraped and refined, became the original lacquer, and the word traveled the trade routes westward, picking up new spellings as it went.