The word "yapping" refers to the act of talking or barking incessantly and often in a high-pitched or annoying manner. It is commonly used to describe small dogs that bark repeatedly or to characterize someone who is chattering or rambling on without much substance.
The term "yap" originates from the late Middle English used to describe the sharp barking sound made by small dogs. It is derived from the Old English word "geap," meaning "to bark."