2. The Latin word mater is the source of English madrigal, material, maternal, matriculate, matrimony, matrix, matron, and matter.
Its ultimate Indo-European ancestor also produced English metropolis and mother.
2. "Nourishing mother" or "foster mother".
3. The school, college, or university that someone formerly attended.
4. A song used as the anthem of a school, college, or university.
The Romans used this term to refer to various goddesses, such as Ceres, goddess of growing vegetation [especially, cereal] to Cybele, a nature goddess; and to other bounteous goddesses.
The symbolism is that the old school, university, or college is the bounteous fostering mother of all of its graduates.
While the dura mater is lining the inside of the skull, it is supporting the cranial sinuses or channels, and allows blood to be carried from the brain to the heart.
Folds of the dura mater partly separate the cerebral hemispheres from each other and the cerebrum (the largest and most developed part of the brain and the area where most conscious and intelligent activities occur) from the cerebellum (region of the brain that maintains posture and balance and the coordination of movements).
2. Etymology: from Latin dura mater; literally, "hard mother" and dura mater cerebri; "hard mother of the brain".