tithe

A portion of one’s annual income contributed voluntarily or due as a tax, especially a contribution of one tenth of one’s income for the support of the clergy or church.

The institution or obligation of paying tithes.

A tax or assessment of one tenth.

A tenth part.

A very small part.

To pay (a portion of one’s income) as a tithe.

To levy a tithe on.

To pay a tithe.