D defs.my
Entry 1 sense Webster, 1913

Castile soap

/kăsˌ-tīl' sōp/ · Cas·tile soap · IPA
01 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.
  1. 1.
    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.