1. A cheerful, uplifting, or optimistic recurring phrase, melody, or theme in music, poetry, or speech
The bright refrain of the chorus lifted everyone's spirits.
O refrão brilhante do coro levantou o ânimo de todos.
2. A luminous or radiant repeated element in artistic or literary works
The poem's bright refrain echoed throughout the verses.
O refrão brilhante do poema ecoava ao longo dos versos.