Light, friendly conversation and laughter; chatting pleasantly. Can be used as a noun or with the verb 'suru'.
久しぶりに旧友と談笑して、時間を忘れた。
I chatted and laughed with an old friend I hadn't seen in a long time and lost track of time.
会食の席では堅苦しくならずに談笑するのがいい。
At a dinner gathering, it's good to have light conversation instead of being too formal.
お客様と談笑する時間を設けることで、関係が深まった。
By making time to chat pleasantly with clients, relationships deepened.