Definition of Patum Peperium in US English:

Patum Peperium

noun

  • A trademark for: a savoury anchovy paste; = "Gentleman's Relish".

Origin

Late 19th century. Probably from *patum, fanciful Latinized alteration of pâté + *piperium, neuter of an unattested adjective from classical Latin piper pepper + -ius suffix forming adjectives. In form Patum Peperium apparently altered after pepper.