Definitions

1. noun

A person who habitually chews gum or masticates, especially excessively, often noisily.

“The buttermouth in the back of the classroom kept bothering the teacher with loud chewing noises.”

2. noun

A type of pipe or mouthpiece, especially one resembling a mouth or a pipe that resembles a mouth.

“The old man puffed on his buttermouth pipe, filling the room with a thick smoke.”