Definitions of tithe:

• noun:   an offering of a tenth part of some personal income
• noun:   a levy of one tenth of something
• verb:   pay a tenth of one's income, especially to the church

  Example: "Although she left the church officially, she still tithes"

• verb:   pay one tenth of; pay tithes on, especially to the church

  Example: "He tithed his income to the Church"

• verb:   levy a tithe on (produce or a crop)
• verb:   exact a tithe from

  Example: "The church was tithed"