| jí | thorns |
| 棘 | thorns |
| 棘刺 | caltrop spine; calthrop |
| 棘头纲 | Acanthocephala |
| 棘手 | thorny (problem) intractable |
| 棘手问题 | a thorny problem |
| 棘楚 | thorny problem troublesome affair |
| 棘毛 | spiny hair; cirrus |
| 棘爪 | pallet; pawl; detent; falling pawl; click |
| 棘球囊 | hydatidaystis; hydatid |
| 棘球绦虫 | echinococcus |
| 棘皮动物 | echinoderm, the phylum containing sea urchins, sea cucumbers etc |
| 棘皮动物门 | Echinodermata |
| 棘螺栓 | rag bolt; barb bolt; hacked bolt; jag bolt; stone stud; wall screw; bat bolt; swage bolt; stone bolt; fang bolt; sprig bolt; ragbolt |
| 棘轮 | ratchet |
| 棘鱼纲 | Acanthodii |
| 棘鼻青岛龙 | Tsintaosaurus spinorhinus, a 10 meter long hadrosaur with a single horn on its duck-billed snout |