Polish Polish Wikipedia has an article on:gumiakWikipedia pl Etymology From guma + -ak. Pronunciation IPA(key): /ˈɡu.mjak/ Audio:(file) Rhymes: -umjak Syllabification: gu‧miak Noun gumiak m inan galosh, Wellington boot (waterproof overshoe used to provide protection from rain or snow) Synonyms: gumowiec, kalosz any plant from the genus Calophyllum Declension More information singular, plural ... singular plural nominative gumiak gumiaki genitive gumiaka gumiaków dative gumiakowi gumiakom accusative gumiak gumiaki instrumental gumiakiem gumiakami locative gumiaku gumiakach vocative gumiaku gumiaki Close Declension of gumiak Further reading gumiak in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN gumiak in Polish dictionaries at PWN Wikiwand - on Seamless Wikipedia browsing. On steroids.