C. D. asked me what the word is for the thing the guitar strings sit on at the end of the neck. I thought for a moment and then I remembered. “The nut,” I said. “The nutmeg,” he said. “The nut,” I said again. “The nutmeg,” he said again too. I wondered if he was right—is the nut so named because it’s made from the wood of the nutmeg tree?