耐火 nàihuǒ fire-resistant Origin Definitions Defs Strokes Stroke Words Sentences Sents 耐火砖 nàihuǒzhuān firebrick a brick made of refractory ceramic material capable of withstanding high temperatures, used for lining furnaces, kilns, or fireplaces耐火土 nàihuǒtǔ fireclay fire clay