/ˈpeŋkːɑ/, [ˈpe̞ŋkːɑ̝]
Alkuperäpen- + -kka, probably somewhat irregularly from penger (possibly inspired by a back-formed stem *penke-), or otherwise of the same origin.
- bank, embankment, mound (steep slope of earth, sand, etc.)
Muodotpenkka(nominative, singular) · penkat(nominative, plural) · penkka(accusative, nominative, singular) · penkat(accusative, nominative, plural) · penkan(accusative, genitive, singular) · penkat(accusative, genitive, plural) · penkan(genitive, singular) · penkkojen(genitive, plural) · penkkain(genitive, plural, rare) · penkkaa(partitive, singular) · penkkoja(partitive, plural) · penkassa(inessive, singular) · penkoissa(inessive, plural) · penkasta(elative, singular) · penkoista(elative, plural) · penkkaan(illative, singular) · penkkoihin(illative, plural) · penkalla(adessive, singular) · penkoilla(adessive, plural) · penkalta(ablative, singular)