Definitions of divide:

• noun:   a serious disagreement between two groups of people (typically producing tension or hostility)
• noun:   a ridge of land that separates two adjacent river systems
• verb:   separate into parts or portions

  Example: "Divide the cake into three equal parts"

• verb:   perform a division

  Example: "Can you divide 49 by seven?"

• verb:   act as a barrier between; stand between

  Example: "The mountain range divides the two countries"

• verb:   come apart
• verb:   make a division or separation
• verb:   force, take, or pull apart