This is the 743rd most frequent Icelandic word.
fleira
"Fleira" means "more" or "additional things" in English.
In this sentence, 'fleira' is used to indicate 'more' in the context of another quantity of similar items (vegetables).
Viltu borða fleira grænmeti?
Would you like to eat more vegetables?
Here, 'fleira' conveys the idea of an additional amount or items (unspecified) related to the agenda.
Hann hafði fleira á dagskránni.
He had more on his agenda.
In this case, 'fleira' represents 'more' as in other topics or aspects beyond the subject, which is work.