castor bean
Refers to the seed of the castor oil plant (Ricinus communis). Often encountered in contexts discussing castor oil (ひまし油) or the plant's toxicity.
Castor oil is made from castor beans.
Standard kanji spelling for castor bean; Only this kanji form.
The kanji 蓖麻子 are Chinese-derived characters for the castor bean plant and its seed. The reading ひまし is the Japanese name for the seed, likely from the plant name ひま (castor oil plant) + し (seed).