Questions & Answers about Bílstjórinn er ómeiddur.
Because Icelandic usually adds the definite article to the end of the noun.
- bílstjóri = driver
- bílstjórinn = the driver
So the -inn here is the masculine singular definite article in this form. English uses a separate word, the, but Icelandic often attaches it directly to the noun.
It is a compound noun:
- bíll = car
- stjóri = controller / operator / driver
So bílstjóri literally means something like car-driver. Compound words are very common in Icelandic.