{"era":"current","word":"ore","meaning":"a rock or mineral from which a valuable substance can be extracted","children":[{"era":"1200s","word":"Middle English or, oor","meaning":"ore; a blend of older Germanic words","children":[{"era":"pre-1100","word":"Old English ōra","meaning":"ore, unwrought metal","children":[],"language":"Old English"},{"era":"pre-1100","word":"Old English ār","meaning":"brass, copper, bronze","children":[],"language":"Old English"}],"language":"Middle English"}],"language":"Modern English"}