1 : one of a series of texts for students learning to read
2 : someone who reads proof in order to find errors and mark corrections
3 : someone who contracts to receive and pay for a service or a certain number of issues of a publication
4 : someone who reads the lessons in a church service; someone ordained in a minor order of the Roman Catholic Church
5 : someone who reads manuscripts and judges their suitability for publication
6 : a public lecturer at certain universities