| 单词 | castor oil |
| 释义 | castor oil n. 1. an oil from the seeds of a plant, Ricinus communis, used as a purgative and lubricant. 2. (in full castor oil plant) this plant. Phrases and idioms castor oil bean (or castor bean) a seed of the castor oil plant. Etymology: 18th c.: orig. uncert.: perh. so called as having succeeded CASTOR(2) in the medical sense |
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