The word "戒指" is formed by combining two conceptual ideas into a single object. The first character, "戒", carries meanings of warning, admonition, or abstinence, often implying a solemn pledge or taboo. The second character, "指", simply means finger. Together, they create the concept of "finger-admonisher", an object worn on the finger that serves as a constant reminder or symbol of a vow or commitment, historically believed to ward off bad spirits or actions, which evolved into the modern meaning of a decorative or wedding ring.