To talk or chatter; to speak foolishly, boastfully, or at great length, esp. to little purpose; to prattle. To utter or tell in a prating manner; to relate foolishly, boastfully, or at great length; (now esp.) to say in a tedious, pompous, or overbearing way. Of domestic poultry: to make a characteristic sound; spec. (of a cock) to crow (obs.); (of a hen) to cluck, esp. to make the loud clucking noise associated with laying an egg.