reader

noun

• 1a person who reads or who is fond of reading:she’s an avid reader
• a person who reads a particular newspaper, magazine, or text:Guardian readers
• a person entitled to use a particular library.
• a person who reads and reports to a publisher or producer on the merits of manuscripts submitted for publication or production, or who provides critical comments on the text.
• a proofreader.
• short for lay reader.

• 2a person who inspects and records the figure indicated on a measuring instrument:a meter reader

• 3a book containing extracts of a text or texts, designed to give learners of a language practice in reading.

• 4 (Reader) British a university lecturer of the highest grade below professor: Dr Gardiner is Reader in Mathematics

• 5a device that produces on a screen a magnified, readable image of a microfiche or microfilm.
• Computing a device or piece of software used for reading or obtaining data stored on tape, cards, or other media.