We have no meanings for "impervious rock" in our records yet.
1 The bustle and efficient madness seemed to flow around him like a fast stream around an impervious rock .
2 My knees had been knocking, but the impervious rock - star persona Snow flaunted for the world had shown no signs of craving vengeance.
3 Not six feet away, Lancelot was retreating toward them, pursued, with a sound like dragging scree, by the demon in its impervious rock shape.
4 The ore bodies consist chiefly of the red oxide of iron (hematite) and occur in troughs of the strata, underlain by some impervious rock .
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