door knocker
US /ˈdɔːrˌnɑːk.ər/
UK /ˈdɔːrˌnɑːk.ər/

1.
aldrava da porta, batedor de porta
a device, typically metal, attached to a door and used for knocking on it to announce one's presence
:
•
She heard a loud bang on the door, but it was just the wind rattling the old door knocker.
Ela ouviu um forte estrondo na porta, mas era apenas o vento chacoalhando o velho aldrava da porta.
•
The antique door knocker was shaped like a lion's head.
A aldrava da porta antiga tinha a forma de uma cabeça de leão.