A kind of fine, hard, white or mottled soap, made with olive oil and soda; also, a soap made in imitation of the above-described soap.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). castile soap. Retrieved September 23, 2026, from http://smartdefine.org/castile_soap/definitions/1985158 |
| Chicago | Webster's. 2011. "castile soap" http://smartdefine.org/castile_soap/definitions/1985158 (accessed September 23, 2026). |
| Harvard | Webster's 2011, castile soap, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/castile_soap/definitions/1985158>. |
| MLA | Webster's. "castile soap" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/castile_soap/definitions/1985158> |