This is the 54th most frequent Danish word.
del
"Del" in Danish means "part" or "portion" in English.
Here, 'del' is used as a noun meaning 'part' or 'portion', indicating a subdivision of the whole (the book).
Jeg har kun læst en del af bogen.
I have only read a part of the book.
In this sentence, 'del' is used idiomatically as part of the phrase 'en del', meaning 'a good deal' or 'a significant amount', referring to quantity.
Denne opgave kræver en del erfaring.
This task requires a good deal of experience.
Here, 'del' appears twice: as a verb 'dele' meaning 'to divide or share', and as a noun 'dele' (plural of 'del'), referring to the parts resulting from the division.