The Chinese word 鼻涕 (bítì) for "nasal mucus" or "snot" is a compound word formed by combining two characters: 鼻 (bí), meaning "nose", and 涕 (tì), an archaic term for "tears" or, by classical extension, "mucus". It is a straightforward descriptive compound where the first character denotes the body part (nose) and the second specifies the fluid or substance (mucus/tears) associated with it, creating a literal meaning of "nose fluid". This follows a common pattern in Chinese where two meaningful characters are combined to create a precise, concrete noun.