LATIN DICTIONARYLexicon Latīnum
noun · masculinesecond declension

frātruus

frātruus m (genitive frātruī)

Meaning

  1. Medieval Latinfraternal nephew, a brother's son

Declension

declension
formsingularplural
nominativefrātruusfrātruī
genitivefrātruīfrātruōrum
dativefrātruōfrātruīs
accusativefrātruumfrātruōs
ablativefrātruōfrātruīs
vocativefrātruefrātruī

Origins

From frāter (“brother”), by analogy with patruus.

Quick answers

What does frātruus mean in Latin?
frātruus, a noun, means “fraternal nephew, a brother's son”.
What is the genitive of frātruus?
The genitive singular is frātruī. frātruus is masculine, second declension.