Champart
Champart (French pronunciation: [ʃɑ̃paʁ]) was a tax in Medieval France levied by landowners on tenants. Paid as a share of the harvest, the amount due varied between ⁄6 and ⁄12, and typically ⁄8 of the cereal crop.
Regional names for champart included arrage, gerbage, parcière, tasque, and terrage.