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ironstone ['aɪənstəun] n
soil. فلز حَديدي مخلوط بمَوَاد ترابيَّة أو طينيَّة   ؛صخر حَديدي
 English thesaurus
ironstone ['aɪənstəun] n
jewl. A rock containing enough iron to permit commercial extraction; an iron ore.
ironstone: 1 phrase in 1 subject
Soil science1