- an obligation imposed upon tenants of certain lands requiring them to have their grain ground at a specified mill
- the fee paid for grinding the grain
C16: variant of earlier thrillage, from thrill, Scottish variant of thrall
Examples from the Web for thirlage
I could speak to the thirlage of invecta et illata too, but let that pass.The Monastery
Sir Walter Scott
Statutory provision has been made for the commutation of these duties (Thirlage Act 1799), and they have now almost disappeared.