Skull

n.	1.	A school, company, or shoal. A knavish skull of boys and girls did pelt at him. These fishes enter in great flotes and skulls. - Holland.
	1.	(Anat.) The skeleton of the head of a vertebrate animal, including the brain case, or cranium, and the bones and cartilages of the face and mouth. See Illusts. of Carnivora, of Facial angles under Facial, and of Skeleton, in Appendix.
	2.	The head or brain; the seat of intelligence; mind. Skulls that can not teach, and will not learn. - Cowper.
	3.	A covering for the head; a skullcap. Let me put on my skull first. - Beau. & Fl.
	4.	A sort of oar. See Scull. Skull and crossbones a symbol of death. See Crossbones.

Noun

1.

skull - the bony skeleton of the head of vertebrates

To see a skull in your dream, symbolizes danger, evil and death. Alternatively, it represents the secrets of the mind. You may be keeping things hidden.Azrael, Black Death, Death, Grim Reaper, Pale Death, Reaper, angel of death, brain box, brainpan, cranium, crossbones, epicranium, memento mori, pale horse, pale rider, pericranium, sickle of Death, skull and crossbones, that fell sergeant, that grim ferryman, white cross