bone ash; cremation ashes; cremains

lime (calcium oxide)

volcanic ash

cigarette ash

(neologism c. 2019) (coll.) to gather dust

to blow away dust

incest between father-in-law and daughter-in-law

to plaster; to render (a wall); (fig.) to bring shame on; also pr. [mo4 hui1]

lime plaster (construction)

cement

cannon fodder

soot

variant of 扒灰[pa2 hui1]

pearl gray

ash from burnt paper

polio (abbr. for 脊髓灰質炎|脊髓灰质炎[ji3 sui3 hui1 zhi4 yan2])

granny gray (hair color)

calcium hydroxide Ca(OH)2; slaked lime

slaked lime; hydrated lime

calcium oxide CaO; quicklime

plant ash

every hope turns to dust (idiom); completely disheartened

lit. to rub one's nose with dust; to suffer a snub; to meet with a rebuff

lit. to have one's nose rubbed in the dirt; fig. to meet with a sharp rebuff

radioactive fallout