[plt-scheme] Defining structures

I have a doubt the concept of defining structures.In htdp chapter 6  its
given as

A STRUCTURE DEFINITION is, as the term says, a new form of definition. Here
is DrScheme's definition of posn: i have modified the example here

(define-struct entry (name zip phone))

Now a few lines later it says


If we give the structure a name,

(define phonebook (make-entry 'PeterLee 15270 '606-7771))

Now my question here is  phonebook the name of the structure  or it is a
structure of type entry?


Aditya
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