The Chinese word "大桥" (dàqiáo) is a compound noun formed through the common grammatical structure of modifier + head noun. Here, the first character "大" (dà) functions as an adjective meaning "big" or "large", which modifies the second character "桥" (qiáo), the core noun meaning "bridge". Together, they combine semantically to create a single, specific concept meaning "big bridge" or, more naturally in English, "major/large bridge". This straightforward method of compounding is a fundamental way Chinese builds precise vocabulary by directly linking descriptive and substantive elements.