I had lobstraganda at first but amended to lobstroganda due to the quoted sources being lobstrosities.
Well, I wasn't 100% sure of how King had spelled it so I searched duck duck go for "ded-a-chek" and the Dark Tower Wiki entry for Lobstrosities topped the list. Sound out of deference to the source material: lobstroganda.
Edit: it took far too much effort to make every single word small like that, so I totally lost track of what I was doing. So replace "crab" with... whatever you want:-).