Male gorillas, especially adult ones, with gray hair on their backs.
Silverbacks are strong and important in a group of gorillas.
Examples:
The silverbacks protect the group from danger.
The silverbacks are the leaders of the gorilla family.
The silverbacks are big and strong.
The silverbacks like to eat leaves and fruits.
The silverbacks are very, very big and strong.
The silverbacks are like the kings of the gorillas.