1. 
   iterator
   (programming) An object or routine for accessing items from a list, array or stream one at a time. By extension, the term can be used for an object or routine for accesing items from any data structure that can be viewed as a list. For example, a traverser is an iterator for tree-shaped data struct...
   Found op http://foldoc.org/iterator
   
   
2. 
   Iterator
   In computer programming, an iterator is an object that enables a programmer to traverse a container. Various types of iterators are often provided via a container`s interface. Though the interface and semantics of a given iterator are fixed, iterators are often implemented in terms of the structure...
   Found op http://en.wikipedia.org/wiki/Iterator
   
   

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