▸ noun
1 the end of something which is furthest from the front or the working end:
the back end of the car swung round.
▪ informal the rump or buttocks:
a face like the back end of a sheep.
▪ the latter part of a period of time:
the book takes us up to the back end of last year.
2 Computing the part of a computer system or application that is not directly accessed by the user, typically responsible for storing and manipulating data:
the back end has three parts to it: server, application, and database.