As a verb:
* To go after or behind: "The dog followed its owner."
* To come after in time or order: "The following day, she went to the beach."
* To obey or comply with: "She followed the doctor's instructions."
* To understand or agree with: "I'm not following your argument."
As a noun:
* The people or things that come after: "The following is a list of ingredients."
* The act of going after or behind: "He was in hot pursuit, but his following was unsuccessful."
As an adjective:
* Coming after something else: "The following week, we're having a party."
To give you a more specific definition, please provide me with the context in which you are using the word "following."