The Collaborative International Dictionary of English v.0.48:

Entail \En*tail"\, v. t. [imp. & p. p. Entailed; p. pr. & vb.
   n. Entailing.] [OE. entailen to carve, OF. entailler. See
   Entail, n.]
   1. To settle or fix inalienably on a person or thing, or on a
      person and his descendants or a certain line of
      descendants; -- said especially of an estate; to bestow as
      an heritage.
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            Allowing them to entail their estates. --Hume.
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            I here entail
            The crown to thee and to thine heirs forever.
                                                  --Shak.
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   2. To appoint hereditary possessor. [Obs.]
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            To entail him and his heirs unto the crown. --Shak.
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   3. To cut or carve in an ornamental way. [Obs.]
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            Entailed with curious antics.         --Spenser.
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Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "entailed":
   absolute, binding, compulsory, conclusive, decisive, decretory,
   dictated, final, hard-and-fast, imperative, imposed, irrevocable,
   mandated, mandatory, must, obligatory, peremptory, prescript,
   prescriptive, required, ultimate, without appeal