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2 ENTRIES FOUND:

castor oil

noun

: a thick oil made from a tropical plant and used in the past as a medicine

Full Definition of CASTOR OIL

:  a pale viscous fatty oil from castor beans used especially as a cathartic and as a lubricant and plasticizer

Origin of CASTOR OIL

probably from its former use as a substitute for castoreum in medicine
First Known Use: 1746

castor oil

noun    (Medical Dictionary)

Medical Definition of CASTOR OIL

:  a pale viscous fatty oil from castor beans used especially as a cathartic or lubricant

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March 30, 2015
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