Definition

1. Noun:
   • Blackhead: A small, dark bump on the skin, typically on the face, caused by a clogged hair follicle. This is the primary and most common meaning of the word "cồi" in modern Vietnamese.

Usage Examples

• Noun:
  • Trên mũi tôi có vài cái cồi. (I have a few blackheads on my nose.)
  • Cô ấy đang dùng mặt nạ để loại bỏ cồi. (She is using a mask to remove blackheads.)
  • Cồi là một loại mụn trứng cá nhẹ. (A blackhead is a mild type of acne.)

Advanced Usage

• The word "cồi" is used almost exclusively in the context of dermatology and skincare. It is a specific, technical term for a comedo (open comedo).

Variants and Related Words

• Mụn đầu đen: This is a more descriptive synonym (literally "black-headed pimple") and is extremely common, often used interchangeably with "cồi".
• Mụn trứng cá: (Acne) - "Cồi" is a type of "mụn trứng cá".
• Mụn đầu trắng: (Whitehead) - The closed comedo counterpart to a "cồi".

Synonyms

• Mụn đầu đen: black-headed pimple.

Related Phrases/Idioms

• There are no common idioms or phrasal verbs specifically using the word "cồi". It is a straightforward medical/skincare term.

noun

1. Black head