(used in the names of grand buildings such as 百老匯大廈|百老汇大厦 Broadway Man
大 · 3 strokes
Depicts an adult man facing forward and standing erect. The meaning later shifted to "big".
厦 · 12 strokes
Phonosemantic compound. 厂 represents the meaning and 夏 represents the sound. Simplified form of 廈.