Definition of "Reader" :

noun: one of a series of texts for students learning to read

noun: a public lecturer at certain universities

noun: someone who reads the lessons in a church service; someone ordained in a minor order of the Roman Catholic Church

noun: someone who reads proof in order to find errors and mark corrections

noun: a person who enjoys reading

noun: a person who can read; a literate person

noun: someone who reads manuscripts and judges their suitability for publication

noun: someone who contracts to receive and pay for a service or a certain number of issues of a publication