Definitions of cost:

• noun:   the total spent for goods or services including money and time and labor
• noun:   value measured by what must be given or done or undergone to obtain something

  Example: "The cost in human life was enormous"

• noun:   the property of having material worth (often indicated by the amount of money something would bring if sold)

  Example: "He couldn't calculate the cost of the collection"

• verb:   require to lose, suffer, or sacrifice

  Example: "This mistake cost him his job"

• verb:   be priced at

  Example: "These shoes cost $100"

• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #16215)