definition 1: to combine (something) with something else, often to increase the quantity of the latter, or to improve it or make it more complete.
example: Add the sugar to the mixture a little at a time.
example: He wants to add this stamp to his collection.
example: You should add more salt to this soup.
definition 2: to say or write beyond what has already been said or written.
example: “And don’t come back!” she added angrily.
See full entry