The Chinese word for cow is
牛

niú

Chinese Definition

cow
1. 奶牛

母牛
1. n. female cow

恐嚇
1. v. to threaten; to intimidate

牛
1. bovine, e.g. cow, bull, ox, buffalo, bison, yak
2. beef
乾gān炒.牛河 - beef chow fun
3. stubborn; pigheaded
4. (colloquial) arrogant
5. (mainland, Mandarin, slang) awesome; powerful
牛屄 - vulgar awesome
牛人 - an awesome person
6. (astronomy) the Ox, a Chinese constellation near Capricorn
7. (physics) Short for 牛頓, tr=niúdùn, newton
8. (Hong Kong Cantonese, computing) Short for 火牛, transformer
牛僧-孺 - Niu Sengru (Tang politician)