I have been stuck on this one too for the past three hours, the last one I need to complete.I have narrowed the letter selection down to c?au?e. The only three words I can find in Chambers are: chaufe, Claude and clause. The only connection I can find is that Claude is one of the names of Thomas Claude Wade Midwood, an Australian caricaturist of the 19th - early 20th century who designed playing cards, including the joker. As to deconstructing the rest of the definition, I must admit to defeat.