See Also: castor(dictionary)
castor oil(medicine)
castor(1)(dictionary)
castor(2)(dictionary)
castor oil(dictionary)
castor sugar(dictionary)
Castor and Pollux(dictionary)
castor-oil plant(encyclopedia)
aromatic castor oil(medicine)
Castor bean(medicine)

castor(2) (iou)



castor noun2. M18.
[Origin uncertain: perh. = CASTOR noun1 2, as having succeeded it in medical use.]
castor oil, a pale yellow oil from the seeds of a tropical or subtropical shrub or tree, Ricinus communis, used as a purgative and lubricant.
Comb.: castor bean, castor oil bean (a seed of) the castor oil plant; castor oil plant the plant that yields castor oil, esp. as grown as a pot plant.