1.Money or goods collected by a government (or an entity to whom the government has delegated this power, e.g. in tax farming) to fund itself and its services, for example by levying a charge on income, purchases (sales), property or harvest, other than that money which is collected by the government in exchange for specific goods (e.g. the purchase of surplus vehicles).
2.A charge (of money, food, labor, etc) collected by a person, organization, etc; something required (exacted) from someone who is (really or notionally) under the control of the taxer, such as a contribution or service.