Entail

tailor (n.C+v.) -- someone whose job is to make men's clothes, that are measured to fit each customer perfectly [↪ dressmaker]

trail (v.+n.)

trailer (n.C+v.)
1 a vehicle that can be pulled behind another vehicle, used for carrying something heavy
2 a vehicle that can be pulled behind a car, used for living and sleeping in during a holiday [= caravan British English]
3 an advertisement for a new film or television show

retailer (n.C)
1 a merchant who sells goods at retail
2 repeater -- to relate or repeat in detail to others

entail (n.+vt.)[transitive]
1 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