Word: backend
The rear, back, or unseen portion (of something). Example: The back end of the operation is kept out of sight of the customers.
That part of a hardware or software system that is farthest from the user; the internals rather than the user interface.
The latter end of any given time, especially the latter part of the year; autumn; late autumn.
You can find a list of possible crossword clues for BACKEND below.