occipital protuberance (noun)

1. The novelist described the character's features, including the occipital protuberance on his head.

2. In the futuristic world, humans have evolved with occipital protuberances that enhance their vision.

3. According to the ancient texts, the gods marked their chosen ones with a glowing occipital protuberance.

4. The animated show portrayed the villain with a comically exaggerated occipital protuberance.