serjeanty
noun
a form of land tenure in which a tenant holding of the king rendered him exclusive services in a status below that of a knight.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The abbot also did the like thing in respect of the sergeanty of Adam the infirmarer, upon payment of one hundred shillings.
From The Chronicle of Jocelin of Brakelond: A Picture of Monastic Life in the Days of Abbot Samson by Jocelin de Brakelond