This is the 146th most frequent Icelandic word.
febrúar
February.
Here, 'febrúar' is used to indicate the month in which the birthday occurs.
Ég á afmæli í febrúar.
My birthday is in February.
In this instance, 'febrúar' is the subject of the sentence, identifying a specific month.
Febrúar er næststyðsti mánuður ársins.
February is the second shortest month of the year.
The word 'febrúar' references February regarding its length during a leap year.