This is the 702nd most frequent Vietnamese word.
miệng
"Miệng" means "mouth" in English.
The word 'miệng' is used to indicate the mouth, a part of the body involved in speech.
Cậu bé mở miệng để nói vài lời.
The boy opens his mouth to speak a few words.
Here, 'miệng' refers to the mouth as it is experiencing a physical sensation associated with speaking.
Bà nói nhiều đến nỗi mỏi cả miệng.
She talked so much that her mouth got tired.
In this context, 'miệng' is metaphorical, being used to represent the act of speaking or not speaking.