castile soap

noun, cas·tile soap often capitalized C \(ˌ)kas-ˈtēl-\

Definition of CASTILE SOAP

: a fine hard bland soap made from olive oil and sodium hydroxide; also : any of various similar soaps

Middle English castell sope, from Castell Castile

First Known Use: 15th century

Medical Dictionary

noun cas·tile soap \(ˌ)kas-ˌtēl-\

: a fine hard bland soap made from olive oil and sodium hydroxide; also : any of various similar soaps

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