1. To strike with a quick succession of slight, sharp sounds; as, pattering rain or hail; pattering feet. The stealing shower is scarce to patter heard. (Thomson)
2. To mutter; to mumble; as, to patter with the lips. In this sense, and in the following, perh. From paternoster.
3. To talk glibly; to chatter; to harangue. I’ve gone out and pattered to get money. (Mayhew)
Origin: Freq. Of pat to strike gently.