Meaning of READER in English

noun one who reads.

2. reader ·noun a proof reader.

3. reader ·noun one who reads much; one who is studious.

4. reader ·noun one who reads lectures on scientific subjects.

5. reader ·noun one whose distinctive office is to read prayers in a church.

6. reader ·noun one who reads manuscripts offered for publication and advises regarding their merit.

7. reader ·noun a book containing a selection of extracts for exercises in reading; an elementary book for practice in a language; a reading book.

Webster English vocab.      Английский словарь Webster.