Swedish edit

Etymology edit

grotta (cave) +‎ rum (room)

Noun edit

grottrum n

  1. a cavern (chamber in a cave)
    Synonym: grottkammare

Declension edit

Declension of grottrum 
Singular Plural
Indefinite Definite Indefinite Definite
Nominative grottrum grottrummet grottrum grottrummen
Genitive grottrums grottrummets grottrums grottrummens

See also edit