Normally when I'm looking for a word definition, I like to go to my Noah Webster 1828 American Dictionary of the English Language. When I looked up the word 'peace' it wasn't quite the definition I was looking for (at least not for this story). A search on another reliable source (ok, the Internet) provided a description that was closer to what I had in mind. According to one site, the English word relies on the Hebrew root slm, meaning "to be complete" or "to be sound." Close but not quite the words I was after.
What I was looking for were the words that describe our cat when he is curled up in his cat tree, snuggled on three sides and asleep. Now that's peace.