vôi nước

Người thợ quét vôi nước lên bức tường mới.

Definition

1. Noun:
   • Limewash / Whitewash: A mixture of slaked lime (calcium hydroxide) and water, used as a white, antiseptic coating for walls, trees, or structures.
   • Milk of lime: A suspension of calcium hydroxide in water, often used in industrial processes, water treatment, or as a traditional disinfectant.

Usage Examples

• Noun:
  • Người nông dân quét vôi nước lên gốc cây để ngăn côn trùng. (The farmer applies limewash to the tree base to prevent insects.)
  • Vôi nước thường được dùng để sát trùng chuồng trại. (Limewash is often used to disinfect animal pens.)
  • Hỗn hợp vôi nước có màu trắng đục. (The milk of lime mixture is opaque white.)

Advanced Usage

• In construction and agriculture, "vôi nước" is distinguished from paint due to its mineral composition and disinfectant properties.
  • Trước khi sơn, họ phủ một lớp vôi nước lên tường để khử khuẩn. (Before painting, they coat the wall with a layer of limewash to sterilize it.)

Variants and Related Words

• Vôi sống (n): Quicklime (calcium oxide).
• Vôi tôi (n): Slaked lime (calcium hydroxide), the primary ingredient in "vôi nước".
• Quét vôi (v): To whitewash; to apply limewash.

Synonyms

• Limewash: A coating mixture of lime and water.
• Whitewash: A similar coating, often based on lime.
• Milk of lime: The liquid suspension form used in technical contexts.

Related Idioms

• While "vôi nước" itself is not typically part of idioms, the action of applying it ("quét vôi") can be used metaphorically to imply a superficial cover-up or hasty improvement of appearance.
  • Công ty đó chỉ quét vôi cho những vấn đề cũ. (That company just whitewashes the old problems.)