The Chinese word for razor is
剃须刀

tì xū dāo

Chinese Definition

razor
1. 剃刀
Components
剃
1. to shave (hair)
剃鬚 - to shave off facial hair
须
1. Simplified form of 須
2. Simplified form of 鬚
刀
1. knife; blade
2. single-edged sword; cutlass
3. (neologism, internet) to bargain; to negotiate on price
4. (q-lite, only common among Tai people)
^刀 ^世-勛 - Dao Shixun
5. (Mandarin, neologism, colloquial) dollar
6. Variant of 刁