firebrick firebreak • firebug · · · Info · Definitions · Characters · · firebrick · · Text Latin · · Script 9 · · Length Definitions · · · (noun) brick made of fire clay; used for lining e.g. furnaces and chimneys. · · Noun Definition 1 Characters · · b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 k latin small letter k U+006B r latin small letter r U+0072