Possible Definitions:
1. Reader (n.) One who reads.
2. Reader (n.) One whose distinctive office is to read prayers in a church.
3. Reader (n.) One who reads lectures on scientific subjects.
4. Reader (n.) A proof reader.
5. Reader (n.) One who reads manuscripts offered for publication and advises regarding their merit.
6. Reader (n.) One who reads much; one who is studious.
7. Reader (n.) A book containing a selection of extracts for exercises in reading; an elementary book for practice in a language; a reading book.