SOCAGE
socage
(noun) land tenure by agricultural service or payment of rent; not burdened with military service
Source: WordNet® 3.1
Etymology
Noun
socage (countable and uncountable, plural socages)
(historical) In the Middle Ages (and chiefly but not exclusively medieval England), a legal system whereby a tenant would pay a rent or do some agricultural work for the landlord.
Source: Wiktionary
Soc"age, n.Etym: [From Soc; cf. LL. socagium.] (O.Eng. Law)
Definition: A tenure of lands and tenements by a certain or determinate
service; a tenure distinct from chivalry or knight's service, in
which the obligations were uncertain. The service must be certain, in
order to be denominated socage, as to hold by fealty and twenty
shillings rent. [Written also soccage.]
Note: Socage is of two kinds; free socage, where the services are not
only certain, but honorable; and villein socage, where the services,
though certain, are of a baser nature. Blackstone.
Source: Webster’s Unabridged Dictionary 1913 Edition