Definitions of Mull:

• noun:   an island in western Scotland in the Inner Hebrides
• noun:   a term used in Scottish names of promontories

  Example: "The Mull of Kintyre"

• verb:   heat with sugar and spices to make a hot drink

  Example: "Mulled cider"

• verb:   reflect deeply on a subject

  Example: "I mulled over the events of the afternoon"

• name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3142)