Question

what do you mean by fossil wood

Answer 1

It is the wood obtained deep below the earth buried the years ago...
I hope this will help you a lot

Answer 2

Fossil wood (from the Greek root Foss meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilizedremains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of fossilisation