Definition of: tithe

(tīth) noun
1. A tax or assessment of one tenth, especially when payable in kind; loosely, any ratable tax.
2. Specifically, in England, a tenth part of the yearly proceeds arising from lands and from the personal industry of the inhabitants, for the support of the clergy and the church.
3. The tenth part of anything; hence, a small part.
—v.t. tithed, tith·ing
1. To give or pay a tithe, or tenth part of.
2. To tax with tithes. [ME tithe, tethe, OE tēotha, tēogotha a tenth]
—tith′er noun