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an item of personal property that by immemorial usage is regarded as annexed by inheritance to a family estate. The owner of such an heirloom may dispose of it during his lifetime, but he cannot bequeath it by will away from the estate. If he dies intestate (without a will), the object goes to his heir at law; otherwise it goes to whoever takes the estate under his will. Such heirlooms are now almost unknown, but the word has acquired a secondary and popular meaning of items of special, endearing value, such as furniture or pictures, handed down from one generation to the next.