[ka-steel] 
| 1. | Spanish, Cas⋅ti⋅lla [kahs-tee-lyah, -yah] . a former kingdom comprising most of Spain. |
| 2. | Also called Castile soap. a variety of mild soap, made from olive oil and sodium hydroxide. |
| 3. | any hard soap made from fats and oils, often partly from olive oil. |
| Castile soap also cas·tile soap (kās-tēl') n. A fine, hard, white, odorless soap made with olive oil and sodium hydroxide. [After Castile.] |
lyɑ