Definition of shin-cracker in English:

shin-cracker

noun

mass nounAustralian informal

词汇	shin-cracker
释义	Definition of shin-cracker in English: shin-cracker noun mass nounAustralian informal (in opal mining) very hard, brittle rock that splinters easily. in a hole of that depth you would first sink through about 10 or 12 feet of shin-cracker Example sentencesExamples Her face was the colour of shin-cracker. Hardened claystone, similar to the shin-cracker of Lightning Ridge, has inhibited exploitation of the area. The biggest problem was the first three feet of shin-cracker. Black opal is found in the sandstone and dirt underlying the shin-cracker. Beneath the weathered quartzite or shin cracker were layers of soft, porous sandstone.
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