Etymology

From cối ("mortar") and xay ("to grind").

Pronunciation

• (Hà Nội) IPA^(key): [koj˧ˀ˦ s̪ɐj˧˧]
• (Huế) IPA^(key): [koj˩ˀ˧ s̪ɐj˧˧]
• (Hồ Chí Minh City) IPA^(key): [koj˦ˀ˥ s̪ɐj˧˥]