The Chinese word for gray is
灰色

huī sè

Chinese Definition

gray
1. 名词. 灰色
Components
灰
1. ash
煙灰 - cigarette ash
2. dust
電腦屏幕上有一層灰。 - There's a layer of dust on the computer screen.
他吹乾gān淨這本書上的灰。 - He blew the dust off the book.
3. lime; mortar
灰泥 - plaster; mortar
石灰 - lime
灰岩 - limestone
4. gray
灰色 - gray (color)
5. disheartened
心灰意冷 - to be disheartened
佢成seng4 個人灰咗。 -
6. (telegraphy) the tenth day of a month
7. (Cantonese, slang) powdered drug; heroin
8. Variant of 烌
9. Used in 灰士
色
1. color; tint; hue; shade
顏色 - color
顏色shǎi兒r - color
紅色 - red
四.色.定理 - four color theorem
2. look; expression
臉色 - facial expression
3. scenery; circumstance
景色 - scenery
夜色 - night scenery
4. kind; sort
貨色 - goods; stuff; trash; rubbish; quality of goods; specification
5. feminine charm; beauty
姿色 - good looks (of women)
6. lust; sexual desire
好hào色 - to lust for women
色情 - pornography; sexual desire
7. (colloquial) perverted; being a pervert; lecherous
8. theatrical role
角jué色 - role; part
9. metallic content
成色 - purity (of a precious metal in an alloy)
10. die (a cube with numbers or symbols on each side, used in games of chance)
色shǎi子zi - die
11. (Buddhism) (l-lite, pi, rūpa) (form; material element; form of existence; etc.)
色即是空，空即是色。 - Form is emptiness, emptiness is form.
12. (transgender slang) Short for 色普龍; cypro (cyproterone acetate)

灰色
1. n. gray (color)
你們有灰色套頭毛衣的現貨嗎？ - Have you any grey pullovers in stock?

灰
1. ash
煙灰 - cigarette ash
2. dust
電腦屏幕上有一層灰。 - There's a layer of dust on the computer screen.
他吹乾gān淨這本書上的灰。 - He blew the dust off the book.
3. lime; mortar
灰泥 - plaster; mortar
石灰 - lime
灰岩 - limestone
4. gray
灰色 - gray (color)
5. disheartened
心灰意冷 - to be disheartened
佢成seng4 個人灰咗。 -
6. (telegraphy) the tenth day of a month
7. (Cantonese, slang) powdered drug; heroin
8. Variant of 烌
9. Used in 灰士