castor oil plant; castor bean
Refers to the plant Ricinus communis, known for its seeds that produce castor oil. The term can also refer to the bean itself.
Castor oil is extracted from the seeds of the castor oil plant.
A castor oil plant is growing in the garden.
Katakana spelling is standard for this plant name; usually written in kana.
Kanji form is rare; the plant is almost always written in kana.
The name トウゴマ (唐胡麻) literally means 'Chinese sesame', referring to the plant's origin and the resemblance of its seeds to sesame seeds.