noun

• (anatomy) The main bones of the head considered as a unit; including the cranium, facial bones, and mandible.
  "He was about to roar when, lying among the black sticks and straw under the cliff, he saw a whole skull—perhaps a cow's skull, a skull, perhaps, with the teeth in it. Sobbing, but absent-mindedly, he ran farther and farther away until he held the skull in his arms."
• (figuratively) The mind or brain.
  "My thoughts are flying around in my skull like fireflies in a jar, but all of a sudden I'm unbearably tired and can't stay awake."
• (Scotland) A shallow bow-handled basket.
• (UK, obsolete, slang) The head or master of a college.
  "Graduates […] will never forget that majestic stature, that massive brow, that commanding look, as its possessor paced the ante-chapel of his college, or took his seat of presidence among the skulls of Golgotha."

verb

• (transitive, golf) To strike the top of (the ball).
  "Monte swung so hard at the next ball that he skulled it straight right, into the pond: 8 in, 9 out."