Skull: Definition, Anatomy, and Usage

Meaning 1：head bone (skull)

skull 🔊

/skʌl/

The hard bone structure that makes up the head and protects the brain.

Human skull anatomy diagram showing eye sockets, nose cavity, and teeth structure

head bone 🔊

➕

/hɛd boʊn/

The bony framework that forms the head and encases the brain, providing protection and structure.

📁 Category：Physical & Mental Health 🔖 Level：初级

📘 Details & Usage

📖 Root Explanation

From Old Norse 'skalli' meaning bald head or shell, referring to the bony head structure.

💡 Mnemonic

Think of 'skull' as the hard shell that schools your brain—like a bony helmet!

📖 Example

The museum had a fascinating exhibit showing the skull of an ancient human ancestor. 🔊 The museum had a fascinating exhibit showing the skull of an ancient human ancestor.

🔗 Collocations

skull and crossbones – a symbol of danger or poison, commonly used on warning signs

fractured skull – a broken skull bone, typically resulting from injury

skull cap – a small, close-fitting cap or the top part of the skull

🔄 Synonyms

cranium (n.) – the part of the skull that encloses the brain

headbone (n.) – an informal term for the skull

calvarium (n.) – the upper dome-shaped part of the skull

📖 Cultural Story

The word 'skull' originated from Old Norse 'skalli', meaning bald head. In modern culture, it is frequently used in medical education, forensic science, and archaeology to study human anatomy and historical remains.