- 蓖麻油 bìmáyóu castor oilA refined vegetable oil extracted from the seeds of the [[蓖麻|蓖麻|bi4 ma2]] plant, used in soaps, lubricants, and as a laxative.
- 蓖麻毒素 bìmádúsù ricinricin; a highly toxic protein derived from the seeds of the castor oil plant
- 蓖麻籽 bìmázǐ castor beanthe seeds of the castor oil plant, used to produce castor oil
- 蓖麻蚕 bìmácán castor silkwormThe larva of a moth that feeds on castor oil plant leaves, its silk is used as a material for textiles.
- 蓖麻毒蛋白 bìmádúdànbái ricinricin, a highly toxic protein found in castor beans
- 蓖麻子 bìmázǐ castor beanthe seed of the castor oil plant, used in traditional medicine and for industrial oil production
