noun Etymology: probably from its former use as a substitute for castoreum in medicine Date: 1746 a pale viscous fatty oil from castor beans used especially as a cathartic and as a lubricant and plasticizer
CASTOR OIL
Meaning of CASTOR OIL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012