Etymology

From trong ("inside"). Adding the hỏi tone here seems to follow a pattern similar to that of ổng, bả, ảnh, cổ, chỉ

Pronunciation

• (Hà Nội) IPA^(key): [ṯɕɐwŋ͡m˧˩]
• (Huế) IPA^(key): [ʈɐwŋ͡m˧˩]
• (Hồ Chí Minh City) IPA^(key): [ʈɐwŋ͡m˨˦]