|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 something
The journey will entail changing trains twice.
2 old use
if you entail property, you arrange for it to be given to a specific person, usually your oldest son, when you die