Black's Law Dictionary (2nd edition)dictionaries

Decims

In ecclesiastical law. Tenths, or tlthes. The tenth part of the annual profit of each living, payable formerly to the pope. There were several valuations made of these livings at different times. The de-cimae (tenths) were appropriated to the crown, and a new valuation established, by 26 Hen. VIII., c. 3. 1 Bl. Comm. 284. See Tithes

Source: Black’s Law Dictionary 2nd Ed (1910)