/ɪn'teɪl; ɪn`tel/
v
1 [Tn] make (sth) necessary; involve 使（某事物）必要; 牵涉
*This job entails a lot of hard work. 这项工作需要十分努力.
* That will entail an early start tomorrow morning. 那就需要明晨很早动身.
2 [esp passive 尤用于被动语态
*Tn, Tn.pr] ~ sth (on sb) (law 律) leave (land) to a line of heirs in such a way that none of them can give it away or sell it 限定（地产）继承人
*The house and estate are entailed on the eldest daughter. 这所房子和地产限定由长女继承.
* He would have sold the property long ago had it not been entailed. 这些财产若非限定继承的话, 他早就卖掉了.

n (law 律)
(a) [U] practice of entailing (entail 2) land （地产的）限定继承.
(b) [C] entailed property 限定继承的财产.

v [T]
[Date: 1300-1400; Language: Anglo-French;Origin: taile 'legal limitation', from Old French taillier 'to cut, limit']
to involve something as a necessary part or result
　A new computer system entails a lot of re-training.
　Some foreign travel is entailed in the job.
entail doing sth
　The journey will entail changing trains twice.
old use if you entail property, you arrange for it to be given to a specific person, usually your oldest son, when you die