: : Does anybody else know?

: It just means "work of necromancy, spectre" according to Robert Foster's THE COMPLETE GUIDE TO MIDDLE-EARTH (which you can, btw, purchase from Amazon.Com through the search engine interface at the bottom of the message board -- plug, plug).

: "dwimor" (a related word, or perhaps just a variant spelling) also appears in "dwimordene", the translated Rohirric name for Lothlorien, which Foster translates as "haunted valley" and in the name Dwimorberg ("haunted mountain") -- the mountain behind Dunharrow where stood the door to the Paths of the Dead.

Presumably, as dene and berg are certainly Anglo-Saxon, "Dwimor" is related to an Old English word also.

-Laik is rather odd as the letter K is not found much in Old English. It could possibly be related to "Litch" (sp?) as in "Litchgate" which is a feature of many older English churches - a roofed over entrance to the church grounds where the coffin of the deceased was sheltered before the funeral service. Litch would therefore imply a dead body. "Haunted cadaver" might be an appropriate insult for a Nazgul.