‘黑眼圈’ literally means ‘black eye circle’ and refers to the dark, discolored areas that appear under the eyes. The character 黑 (hēi) means ‘black’ or ‘dark’, 眼 (yǎn) means ‘eye’, and 圈 (quān) means ‘circle’ or ‘ring’—together forming a descriptive compound noun for the visible discoloration around the orbital area. These circles are often caused by fatigue, lack of sleep, allergies, genetics, or thinning skin with age.

This term is commonly used in everyday health-related conversations, medical settings, beauty discussions, and self-care contexts. Unlike clinical terms like ‘periorbital hyperpigmentation’, 黑眼圈 is colloquial, neutral in register, and widely understood across all age groups. It carries no inherent judgment but may imply tiredness or stress when used informally—e.g., commenting on someone’s appearance after a late night.