nounperlībrātĭoPERLIBRATIO☆ KeepMeaninga levellingLewis & Short 1879ModernAs printed, 1879PERLIBRATIOLEWIS & SHORTPERLIBRATIOperlībrātĭo, ōnis, f. perlibro, I. a levelling of water, Vitr. 8, 6.Read the whole entry