noun / verb
tithe
TYTHE/taɪð/
A contribution of one tenth of income or produce for religious purposes.
She gives a tenth of her income to her church as a tithe.

Etymology
The old word for “tenth” survived specifically for the tenth part of goods or income owed to support the clergy, while “tenth” took over ordinary ordinal use.
In context
a portion of his harvest to the church as a tithe
More examples
- The farmer sets aside a tithe of the harvest for the church.
- They tithe on their income every month.
- He has tithed faithfully for years, even when money was tight.
Forms
tithe · tithes · tithed · tithing
tither noun — A person who pays a religious tithe.