I distinctly remember this word being used by the Wizard of OZ directed towards the Tin Man when the group of 4 querants confronted him the first time in his great hall. I am wondering why the writers of the movie would have given this vocabulary to the wizard's dialogue when the Tin Man was shiny and rust proof in the hall of the Wizard. The word as defined in the AWAD email of 06/26/2005 is "Dark, gloomy, obscure, misty." Perhaps they did not know the meaning of the word since they didn't subscribe to Anu's mailing list. Perhaps the writers simply wanted to give the wizard a pompous and overbearing attitude. I would think that the Wizard's barb about "cantankerous" would be more apt a desciption of the Tin Man's noisy movements but caliginous seems fairly off the mark. Feed back would be appreciated.