This is the 526th most frequent Icelandic word.
reykjavíkur
"Reykjavíkur" is the genitive form of "Reykjavík," meaning "of Reykjavík," referring to something belonging to or associated with Reykjavík, the capital of Iceland.
In this sentence, 'Reykjavíkur' is used to describe a location within Reykjavik, again employing the genitive case to show a part of the city.
Landakot er í vesturhluta Reykjavíkur.
Landakot is in the western part of Reykjavik.
The term 'Reykjavíkur' indicates that the bishop is associated with Reykjavik, demonstrating the genitive use to attribute origin or association.
Sagan af biskupnum af Reykjavíkur flakkaði víða.
The story of the bishop of Reykjavik spread widely.
Here, 'Reykjavíkur' is in the genitive case, denoting possession or belonging, indicating the downtown area related to Reykjavik.