The Vietnamese word "chũm" refers to the top part that is cut off from an areca nut (also known as betel nut). This part is typically removed before the nut is prepared for consumption.
In Vietnamese culture, areca nuts are commonly chewed with betel leaves and lime as part of social or cultural practices, so the term "chũm" may come up in discussions about these traditions. Understanding this word can enhance your appreciation of Vietnamese customs and social interactions.