Webster's Revised Unabridged Dictionary · 1913

Palma Christi

Palma Christi

[Latin, palm of Christ.]

(Botany) A plant (Ricinus communis) with ornamental peltate and palmately cleft foliage, growing as a woody perennial in the tropics, and cultivated as an herbaceous annual in temperate regions; -- called also castor-oil plant.