Bókin

Bókin is the definite singular form of the Icelandic noun bók, meaning "the book." It is used to refer to a specific book that both speaker and listener know about, in contrast to the indefinite form bók, which means “a book.”

Etymology and inflection: The word derives from Old Norse bok and is related to other Germanic words for book, such as Danish bog and Swedish bok. In Icelandic, the definite article is expressed as a suffix attached to the noun, so bók becomes bókin in the nominative singular. Other cases and numbers require different forms.

Usage: Bókin is common in everyday and literary Icelandic when pointing to a particular book. It appears as the subject, object, or in other syntactic positions with the definite sense. Indefinite reference uses the bare form bók. Examples: Bókin er á borðinu. (The book is on the table.) Ég les bókina. (I read the book.) Ég vil lesa bók. (I want to read a book.)

Notes: As a definite noun form, bókin is a standard part of Icelandic grammar and orthography. The definite suffix system affects many masculine and feminine nouns, and the form of the definite article can indicate case and number through its suffix.