WordNet (r) 3.0 (2006):

data structure
    n 1: (computer science) the organization of data (and its
         storage allocations in a computer)

The Free On-line Dictionary of Computing (30 December 2018):

data structure

    Any method of organising a collection of
   data to allow it to be manipulated effectively.  It may
   include meta data to describe the properties of the
   structure.

   Examples data structures are: array, dictionary, graph,
   hash, heap, linked list, matrix, object, queue,
   ring, stack, tree, vector.

   (2003-09-11)