Definitionen
1.NounThe rear, back, or unseen portion (of something)."The back end of the operation is kept out of sight of the customers."
2.NounThat part of a hardware or software system that is farthest from the user; the internals rather than the user interface.
3.NounThe latter end of any given time, especially the latter part of the year; autumn; late autumn."I'll see you on the back end of tomorrow."
4.NounMoney paid on a contingent deferred basis, for example, as a proportion of the profits or revenue of a work.
5.NounThe processing of spent fuel from a nuclear reactor into reusable materials.