My colleagues, having read all your posts carefully, I am still unsure which word to write beneath the grid, and I feel that Centigram has rather left us in the churl. If I don't opt for the word that defines the final noun in the quotation, then I am not demonstrating that I have understood. The other, commoner word (its anagram) has nothing else to do with the puzzle, and were I to use it, I might be judged simply to have read the letters off from their advertised location. So I suppose I will choose the obscure word that defines the noun, but I am not quite convinced. Can there be some as yet unseen subtlety that would clinch it?