hússins

In a sentence

• Glugginn á bakhlið hússins er opinn.

  The window at the back of the house is open.

  In this sentence, the word 'hússins' is a noun in the genitive singular case, used to show possession—'of the house'.

• Lýsing hússins var mjög dauf og rómantísk.

  The lighting of the house was very dim and romantic.

  Here, 'hússins' is used in its genitive singular form to indicate the owner of the lighting—the house.

• Málverkið á veggnum í stofu hússins er frá 19. öld.

  The painting on the wall in the living room of the house is from the 19th century.

  Here again, 'hússins' functions in the genitive singular to describe the location related to the painting, indicating that the living room belongs to the house.