Fee tail
（重定向自Entail）
In English common law, fee tail or entail is a form of trust established by deed or settlement which restricts the sale or inheritance of an estate in real property and prevents the property from being sold, devised by will, or otherwise alienated by the tenant-in-possession, and instead causes it to pass automatically by operation of law to an heir pre-determined by the settlement deed. The term fee tail is from Medieval Latin feodum talliatum, which means "cut(-short) fee", and is in contrast to "fee simple" where no such restriction exists and where the possessor has an absolute title (although subject to the allodial title of the monarch) in the property which he can bequeath or otherwise dispose of as he wishes. Equivalent legal concepts exist or formerly existed in many other European countries and elsewhere.