Synonyms for Baltic (same or very similar meaning)
WordNet sense 1 (a sea in northern Europe; stronghold of the Russian navy):
Baltic SeaWordNet sense 2 (a branch of the Indo-European family of languages related to the Slavonic languages; Baltic languages have preserved many archaic features that are believed to have existed in Proto-Indo European):
Baltic languageFrom the ODE community, based on WordNetadd/edit