广厦 (guǎng shà) is a literary noun meaning 'spacious mansion' or 'vast dwelling'. It combines 广 (guǎng), meaning 'broad', 'wide', or 'extensive', and 厦 (shà), an archaic or poetic term for 'mansion', 'large house', or 'stately building'. Together, they evoke grandeur, scale, and dignity — not just physical size but also social or cultural weight. The word appears frequently in classical poetry and formal writing, often symbolizing shelter, aspiration, or ideal living conditions.

Unlike everyday terms like 房子 (fángzi, 'house') or 大楼 (dàlóu, 'high-rise'), 广厦 carries elevated register and emotional resonance — most famously in Du Fu’s Tang-dynasty poem: '安得广厦千万间' ('How I wish for ten thousand spacious mansions!'), expressing compassion for the homeless. It rarely refers to modern apartments or commercial buildings; instead, it suggests noble, humane, or aspirational architecture — sometimes even metaphorically, as in policy discourse about affordable housing.