Definitions of portion:

• noun:   the result of parcelling out or sharing
• noun:   something less than the whole of a human artifact
• noun:   an individual quantity of food or drink taken as part of a meal

  Example: "His portion was larger than hers"

• noun:   assets belonging to or due to or contributed by an individual person or group
• noun:   something determined in relation to something that includes it

  Example: "I read a portion of the manuscript"

• noun:   your overall circumstances or condition in life (including everything that happens to you)

  Example: "Success that was her portion"

• verb:   give out or allot