‘夜莺’ literally means ‘night’ (夜) + ‘oriole/warbler’ (莺), referring to the nightingale — a small, brown songbird famous in European literature and music for its rich, haunting nocturnal singing. Though not native to China, the word is widely used in Chinese poetry, translations of Western works, and metaphorical expressions about beautiful or melancholy voices.

The character 莺 originally denotes various small, melodious songbirds in Chinese tradition (like the yellow-throated bunting), and when paired with 夜, it specifically evokes the European nightingale’s cultural symbolism — solitude, longing, artistic inspiration, and hidden beauty. It appears more often in literary, artistic, or lyrical contexts than in everyday zoological discussion.