n. A fortification of any kind; a stronghold; a place of defense.n. Support; defense.n. A document by which claims and rights are defended or maintained; a title-deed; a deed, charter, record, etc., especially such as belong to public bodies, or those in which national, manorial, or ecclesiastical rights and privileges are concerned.n. Any article preserved or treasured as of special interest or value, as jewels, relies, etc.