entail - Dictionary definition and meaning for word entail
"tail" is a necessary thing for all animal...so necessary
en(become) +tail...becoming a tail to someone means acting like a toady....which some ppl do coz its necessary for their promotion
entail means:to involve sth that cannot be avoided...entail sounds like INTEL so one has to involve intel if he is making a computer.
just like a tail is necessary for almost every mammal so it is needed and necessary
Entail-> Enabling retail in selling goods is unavoidable.