B1[C]a conversation between two people, often about a particular subject: I asked him to have a talk with his mother about his plan.Informal talking and conversationB2[C]a speech given to a group of people to teach or tell them about a particular subject: He gave a talk about/on his visit to America.Lecturing and addressingtalksC2[plural]›serious and formal discussions on an important subject, usually intended to produce decisions or agreements: Talks were held in Madrid about the fuel crisis.Diplomacy and mediationDebate and discussionC2[U]the action of talking about what might happen or be true, or the subject people are talking about: Talk won't get us anywhere.The talk/Her talk was all about the wedding.Informal talking and conversation