a person who reads or who is fond of reading
she's an avid reader
a person who inspects and records the figure indicated on a measuring instrument
a meter reader
a book containing extracts of a text or texts, designed to give learners of a language practice in reading
a university lecturer of the highest grade below professor
Dr Gardiner is Reader in Mathematics
a device that produces on a screen a magnified, readable image of a microfiche or microfilm