Definition & Meaning of "piehole"in English

What is the origin of the term "piehole" and how is it used?

"Piehole" is an English slang term that appeared in the early–mid 20th century, originally in American informal speech, combining "pie" with "hole" as a humorous or vivid metaphor for the mouth. It gained popularity as a dismissive or mocking way to refer to someone talking too much or saying something unwelcome. The term is often used in phrases like "shut your piehole" and appears in casual conversation, comedy, and media. It is mildly derogatory, playful in tone, and context-dependent: it can be teasing or insulting but is rarely considered deeply offensive.