| 椰丝 | yē sī | shredded coconut |
| 游丝 | yóu sī | gossamer; hairspring |
| 焊丝 | hàn sī | welding wire |
| 无丝分裂 | wú sī fēn liè | amitosis |
| 熟丝 | shú sī | silk raw material (prepared by boiling in soap) |
| 生姜丝 | shēng jiāng sī | shredded ginger |
病来如山倒，
病去如抽丝 | bìng lái rú shān dǎo ,
bìng qù rú chōu sī | sickness comes like a landslide, but goes slowly like spinning silk (idiom); expect to convalesce slowly |
| 真丝 | zhēn sī | silk; pure silk |
| 竹丝鸡 | zhú sī jī | black-boned chicken; silky fowl; silkie; Gallus gallus domesticus Brisson; see also 乌骨鸡 |
| 纹丝 | wén sī | tiny bit; a jot; whisker |
| 纹丝不动 | wén sī bù dòng | to not move a single jot (idiom) |
| 纹丝儿 | wén sīr | erhua variant of 纹丝, tiny bit |
| 丝巾 | sī jīn | headscarf; kerchief; silk neckband |
| 丝带 | sī dài | ribbon |
| 丝柏 | sī bó | cypress |
| 丝氨酸 | sī ān suān | serine (Ser), an amino acid |
| 丝状物 | sī zhuàng wù | filament |
| 丝盘虫 | sī pán chóng | Trichoplax adhaerens (biology) |
| 丝绸古路 | sī chóu gǔ lù | the ancient Silk Road; see also 丝绸之路 |
| 丝绸织物 | sī chóu zhī wù | silk fabric |
| 丝绵 | sī mián | silk floss; down |
| 丝缕 | sī lǚ | silk thread |
| 丝织物 | sī zhī wù | woven silk fabric |
| 丝袜 | sī wà | silk stockings |
| 丝路 | sī lù | the Silk road; abbr. for 丝绸之路 |
| 丝雨 | sī yǔ | drizzle; fine rain |
| 经丝彩色显花 | jīng sī cǎi sè xiǎn huā | warp brocade; woven fabric with single woof but colored warp |
| 缠丝玛瑙 | chán sī mǎ nǎo | sardonyx (gemstone of brown-white striped chalcedony) |
| 肉丝 | ròu sī | shredded meat; shredded pork |
艾格尼丝・史沫特
莱 | Ài gé ní sī · Shǐ mò tè lái | Agnes Smedley (1892-1950), US journalist who reported on China, esp. the communist side |
| 菟丝子 | tù sī zǐ | dodder (Cuscuta sinensis, a parasitic vine with seeds used in medicine) |
| 葫芦丝 | hú lú sī | hulusi (a kind of free reed wind instrument); cucurbit flute |
| 蕾丝 | lěi sī | lace (loanword) (textiles) |
| 蕾丝花边 | lěi sī huā biān | lace border (loanword) |
| 蕾丝边 | lěi sī biān | lesbian (slang) (loanword) |
| 藕断丝连 | ǒu duàn sī lián | lit. lotus roots may break, but the fiber remains joined (idiom); lovers part, but still long for one another |
| 蛛丝马迹 | zhū sī mǎ jì | lit. spider's thread and horse track; tiny hints (of a secret); traces; clue |
| 螺丝刀 | luó sī dāo | screwdriver; CL:把 |
| 螺丝母 | luó sī mǔ | nut (female component of nut and bolt) |
| 螺丝起子 | luó sī qǐ zi | screwdriver |
| 螺丝钻 | luó sī zuàn | auger; gimlet; screwdriver (cocktail) |
| 蟠尾丝虫 | pán wěi sī chóng | Onchocerca volvulus, the filarial parasite worm causing "river blindness" or onchocerciasis, the second most common cause of blindness in humans |
| 蟠尾丝虫症 | pán wěi sī chóng zhèng | "river blindness" or onchocerciasis, the second most common cause of blindness in humans, caused by the filarial parasite worm Onchocerca volvulus |
| 贝娅特丽克丝 | Bèi yà tè lí kè sī | Beatrix (name) |
| 走钢丝 | zǒu gāng sī | to walk a tightrope; fig. to take a risk |
| 轴丝 | zhóu sī | axoneme (long thread of nerve cell) |
| 酸辣土豆丝 | suān là tǔ dòu sī | hot and sour shredded potato |
| 金丝猴 | jīn sī hóu | golden snub-nosed monkey (Rhinopithecus roxellana) |
| 金丝雀 | jīn sī què | canary |
| 银丝卷 | yín sī juǎn | silk thread roll, steamed bun from Shandong province bun with hand-drawn dough threads folded over |
