The Collaborative International Dictionary
Allodium \Al*lo"di*um\, n. [LL. allodium, alodium, alodis,
alaudis, of Ger. origin; cf. OHG. al all, and ?t (AS. e[=a]d)
possession, property. It means, therefore, entirely one's
property.] (Law)
Freehold estate; land which is the absolute property of the
owner; real estate held in absolute independence, without
being subject to any rent, service, or acknowledgment to a
superior. It is thus opposed to feud.
--Blackstone.
--Bouvier.
Wiktionary
n. (context dated English) freehold land or property
Usage examples of "allodium".
I mean only, that when they could convert an allodium into a fief, which was to descend to their heirs, as is the case of the formulary above mentioned, they had very great advantages in doing it.
After that treaty every freeman had a right to subject his allodium to the King, or to any other lord, as he thought proper.