noun Vit·ro·lite \ˈvi‧trəˌlīt\

Definition of Vitrolite

  1. :  a thick, homogeneous, opaque structural glass used especially for ornamental finish on surfaces exposed to the weather At opposite ends of the length of the bathroom are lavatories with custom designed basins set into counters of yellow Vitrolite glass. — Gregory Wittkopp, Antiques, May 1995 —formerly a U.S. registered trademark

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to criticize severely

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