The Chinese word for razor blade is
剃须刀片

tì xū dāo piàn

razor blade

Chinese Definition

Components
剃须刀
1. Simplified form of 剃鬚刀
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
片
1. thin piece; flake; slice
片子zi - flake, small piece -
2. film; TV play; photograph; record
影片 - film, movie -
片piān子zi - film, movie, film reel -
3. (Cantonese) video
4. (Cantonese, specifically) film; movie
賀歲片pin3-2
片pin3-2商
5. (medicine) tablet
6. (dialectal) Short for 尿片
幫 BB 換片pin3-2 - to change diapers for the baby
纜片pin3-2 - to wear a diaper
7. part of a place; area
8. (linguistics) subgroup; subdivision of a language
廣府片 - Guangfu subgroup (of Yue Chinese)
9. to slice; to carve thin
10. (Cantonese) to fight
11. partial; incomplete; one-sided
片面 - unilateral, one-sided
一片麵包 - a slice of bread
12. lb, zh, used with numeral scenarios, scenes, feelings, atmospheres, sounds, clouds
13. (Teochew)
14. (Hakka, Teochew) side
東片 - tr=dang1 pin3, east; east side, MN-T
許片 - tr=he2 pin3, there; that side, MN-T