If you have the CD-Rom, you can try to use http://njw.name/oed2dict which is a set of scripts that convert the full Oxford English Dictionary v2 (CDROM version 3.0) into the jargon and DICT file formats.
(This is based on a comment from "a well-known Swedish sharing platform", where a compressed DICT format of the Oxford English Dictionary could be available)
I'd love to be able to add an old version to my Mac dictionary app.