and the rasping doors groaned
as loud as a bull will bellow, champing grass at pasture.
So as the key went home those handsome double doors
rang out now and sprang wide before her.
– Homer
The Odyssey, Book 21, lines 56-59. Penelope unlocks the doors of the secret storeroom deep in the palace to retrieve Odysseus’ backstrung bow. An epic simile describes the doors groaning as loud as a bull when it grazes in a field.