Subinfeudation \Sub*in`feu*da"tion\, n. (Law)
(a) The granting of lands by inferior lords to their
dependents, to be held by themselves by feudal tenure.
--Craig.
(b) Subordinate tenancy; undertenancy.
The widow is immediate tenant to the heir, by a
kind of subinfeudation, or undertenancy.
--Blackstone.