The phrase "thick curtains" refers to curtains that are made of heavy and dense fabric. They are used to block out light, sound, and heat to create a darker and quieter environment inside a room. Full definition
The homes are covered with thick curtains of ivy, pint - sized shops line cobbled alleyways, and small wall restaurants and bars spill out into the narrow streets. (abackpackerstale.com)
He lives with his three roommates in a Victorian - style home with thick curtains and outdated wallpaper outside of Wellington. (waytooindie.com)