n (British) a type of flattish bun, usually cut in two horizontally, toasted and spread with butter, etc, before being eaten
n (context|especially US) A type of rich individual cake containing chocolate chips, blueberry|blueberries or some other flavouring.
n (context|computing) a mechanism used in the w:Java Network Launching Protocol|Java Network Launching Protocol analogous to the cookie mechanism and which permits a program running in a browser to perform operations on a client machine