At 10:29:12 AM on Thursday, February 17, 2011, Edgar Widlund
wrote:

> When I look in Zoega I frequently can not find a word
> listed therein. Is there another dictionary one could
> purchase to supplement Zoega where I might find the word
> in question?

As Sabin noted, Cleasby & Vigfusson has some words that
Zoëga omitted when he made his abridgement. For those who
can read Danish there is also Fritzner Ordbog; there's a
search interface for it at
<http://www.edd.uio.no/perl/search/search.cgi?appid=86&tabid=1275>.
In this on-line version some of the words have been run
together, so it can be a little hard to read, but the thing
is old enough to be available via Google Books, in three
volumes.

Brian