Real Dictionary

tithe
countable noun: A tithe is a fixed amount of money or goods that is given regularly in order to support a church, a priest, or a charity.

tithe in American English
one tenth of the annual produce of one's land or of one's annual income, paid as a tax or contribution to support a church or its clergy
to pay a tithe
to pay a tithe of (one's produce, income, etc.)
intransitive verb: to give or pay a tithe
noun: the tenth part of agricultural produce or personal income set apart as an offering to God or for works of mercy, or the same amount regarded as an obligation or tax for the support of the church, priesthood, or the like
transitive verb: to give or pay a tithe or tenth of (produce, money, etc.)

tithe in British English
noun: a tenth part of agricultural or other produce, personal income, or profits, contributed either voluntarily or as a tax for the support of the church or clergy or for charitable purposes
verb: to exact or demand a tithe or tithes from (an individual or group)