To stay at home during the initial mourning period for a parent. This traditional term refers to the ancient custom of sleeping on a straw mat during the first hundred days of mourning.

(idiom) to sleep on a straw mat with a clod of earth for a pillow; refers to the traditional etiquette observed by a filial son during the mourning period for a parent to express deep grief

To sleep on a straw mat and use a bundle of grass as a pillow; refers to an ancient mourning custom observed after the death of one's parents.

To sleep on a straw mat with a clod of earth as a pillow; used in ancient times to describe a child in deep mourning for a deceased parent.

a large sheet of waterproof material used for covering goods or equipment; tarp

(literary) To be in the period of mourning for one's parents; originally referred to the straw mat used by mourners, but later came to refer to the mourner themselves or the place where they stay.

To thatch a roof; specifically the process of applying mud or lime over straw or mats laid on top of the rafters.