The term 'coarse woven fabric' can be summarized as a type of fabric known as SCRIM, which is a lightweight, open-weave fabric made from cotton, linen, or hemp. It is often used in theatrical backdrops and curtains, as well as for other decorative purposes. SCRIM is also used in the construction industry for insulation and soundproofing. It is characterized by its coarse texture and open weave, which allows air to pass through it easily.