This is the 572nd most frequent Icelandic word.
hinn
"The other" or "the."
Here, 'hinn' is the definite article, meaning 'the other,' showing specificity and comparison between items.
Ég sá hinn bílinn fljóta á vatninu.
I saw the other car floating on the water.
In this context, 'hinn' refers to 'the other,' and is used in temporal idiom to describe a day different from today or the current one.
Hinn daginn fórum við í fjallgöngu.
The other day, we went on a hike.
Here, 'hinn ljósi' functions as the definite article combined with the adjective 'light-colored,' emphasizing the specific characteristic of the dog.