Webster's Revised Unabridged Dictionary · 1913

Ricinus

Ricinus ({not transcribed}) , noun

[Latin, the castor-oil plant.]

(Botany) A genus of plants of the Spurge family, containing but one species (Ricinus communis), the castor-oil plant. The fruit is three-celled, and contains three large seeds from which castor oil is expressed. See Palma Christi.