Met is a verb that is used to describe the action of having encountered or come into contact with someone or something in the past. It is the past tense of the verb "meet," and it indicates that a meeting has already taken place. For instance, a person could say, "Yesterday, I met my old high school friend for lunch, and we reminisced about our school days." In this context, the person is describing a past event where they interacted with their high school friend. The use of "met" here emphasizes that the meeting occurred in the past and is now completed. As such, "met" is a vital verb for describing past events that involve interactions with other people or objects.