Polabian

noun

Po·​la·​bi·​an pō-ˈlä-bē-ən  -ˈlā- 

1

or Polab

pō-ˈläb 

: a member of a Slavic people formerly dwelling in the basin of the Elbe and on the Baltic coast of Germany

2

: the extinct West Slavic language of the Polabians

Word History

Etymology

Polab, ultimately from Polabian po on + Låbí, the Elbe River

First Known Use

1866, in the meaning defined at sense 1