Definition of skulls:
(n) :
(anatomy) The main bones of the head considered as a unit; including the cranium, facial bones, and mandible.
(n) :
These bones as a symbol for death; death's-head.
(n) :
(figuratively) The mind or brain.
(v) :
To hit in the head with a fist, a weapon, or a thrown object.
(v) :
To drink everything that remains in a glass by upending it.
(n) :
The crown of the headpiece in armour.