What does READING mean?

noun

1. the cognitive process of understanding a written linguistic message“his main reading was detective stories”
2. a particular interpretation or performance“on that reading it was an insult”
3. 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”
4. written material intended to be read“the teacher assigned new readings”
5. a mental representation of the meaning or significance of something
6. a public instance of reciting or repeating (from memory) something prepared in advance“the program included songs and recitations of well-loved poems”
7. the act of measuring with meters or similar instruments“he has a job meter reading for the gas company”