Allodium

n. estate which is independently owned without any obligations or fees to an overlord; land that is complete and absolute property of the owner

Allodial title is a concept in some systems of property law. It describes a situation where real property (land, buildings and fixtures) is owned free and clear of any encumbrances, including liens, mortgages and tax obligations. Allodial title is inalienable, in that it cannot be taken by any operation of law for any reason whatsoever.
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n. allodium, estate which is independently owned without any obligations or fees to an overlord; land that is complete and absolute property of the owner

n. allodium, estate which is independently owned without any obligations or fees to a feudal lord

(n.)
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.