1. A wish or blessing expressed to one or more people at night, hoping they have a good night or good night's sleep
Before leaving the party, she said 'que tengan buena noche' to all her friends
Antes de deixar a festa, ela disse 'que tenham uma boa noite' a todos os seus amigos
2. A farewell greeting used in the evening or before bed
The host wished everyone 'que tengan buena noche' as they departed
O anfitrião desejou 'que tenham uma boa noite' a todos quando saíram