sergeanty
noun
ser·geanty ˈsär-jən-tē 
plural sergeanties
: any of numerous feudal services of a personal nature by which an estate is held of the king or other lord distinct from military tenure and from socage tenure
Word History
Etymology
Middle English sergeaunte, sergancie, serjantie, borrowed from Anglo-French serjantie, serjauntie, from sergaunt sergeant + -ie -y entry 2
First Known Use
15th century, in the meaning defined above