Definition of Plattdeutsch in English:

Plattdeutsch

noun & adjective

  • another term for Low German
    • ‘The term Plattdeutsch (sometimes translated as ‘Low German’) is used for the ‘broad’ dialects in the north and west.’
    • ‘The closest relatives to this language are Flemish, Dutch, and the Plattdeutsch dialects still spoken in Germany's Rhineland.’

Origin

German, from Dutch Platduits, from plat flat, low + Duits German.

Pronunciation:

Plattdeutsch

/ˈplatdɔɪtʃ/