rato is an indefinite amount of time, short or long, so it can be used as "moment", "ago", "while", "(some) time", etc. E.g.: "en un rato" ---> "in a moment" "hace rato" ----> " a while ago" or "sometime ago" "por un rato" ---> "for a while" "bastante rato" ---> " quite some time" continuaré jugando wii "un rato más" ---> J'll play wii "just another moment" (and then...five hours later)l...."bueno, un rato más"......