/tʃæt ||; tʃæt/verb [I] (chatting;chatted)chat (with/to sb) (about sth) to talk to sb in a friendly, informal way 跟某人闲谈或聊天: The two grandmothers sat chatting about the old days. 两位老大妈坐着聊起往事来了。 chat sb up (Brit 英) (informal 非正式) to talk to sb in a friendly way because you are sexually attracted to him/her 搭讪；攀谈；调情