What is the meaning of after?

adjective

• Located farther aft.

adverb

• Happening at a time subsequent to a reference time.
  • usage: "he apologized subsequently"; "he's going to the store but he'll be back here later"; "it didn't happen until afterward"; "two hours after that"
  • synonyms: subsequently, later, afterwards, afterward, later on
• Behind or in the rear.
  • usage: "and Jill came tumbling after"