1Scottish historical In the system of thirlage: a small quantity of grain or meal payable to a miller's servant as a sequel, levied on each lot of corn ground at the mill. Also: †the position of miller's servant or assistant (obsolete). Compare "knave".
Usually given in addition to a payment of multure to the miller.
2With possessive adjective: a mock title given to a knavish person.
Middle English; earliest use found in Facsimiles National MSS Scotland. From knave + -ship.