dura mater
Noun
Meaning
The tough, fibrous membrane, which lines the cavity of the skull and spinal column, and surrounds the brain and spinal cord; -- frequently abbreviated to dura.
Source: Webster's dictionarySynonyms
Hypernyms
Examples
A closed (non-missile) head injury is where the dura mater remains intact.
A penetrating head injury occurs when an object pierces the skull and breaches the dura mater.
The dural venous sinuses within the dura mater surrounding the brain receive blood from the brain and also are a point of entry of cerebrospinal fluid from arachnoid villi absorption.