Definition of "Reading" :
noun: the act of measuring with meters or similar instruments
"He has a job meter reading for the gas company."
noun: the cognitive process of understanding a written linguistic message
"His main reading was detective stories."
noun: a datum about some physical state that is presented to a user by a meter or similar instrument
"He could not believe the meter reading."
noun: a mental representation of the meaning or significance of something
noun: written material intended to be read
"The teacher assigned new readings."
noun: a particular interpretation or performance
"On that reading it was an insult."
noun: a public instance of reciting or repeating (from memory) something prepared in advance
noun: a city on the River Thames in Berkshire in southern England