chat (chats plural & 3rd person present) (chatting present participle) (chatted past tense & past participle )When people chat, they talk to each other in an informal and friendly way. v-recip The women were chatting... pl-n V I was chatting to him the other day... V to/with n We chatted about old times. V about n Chat is also a noun., n-count I had a chat with John. chat up phrasal verb If you chat someone up, usually someone you do not know very well, you talk to them in a friendly way because you are sexually attracted to them. (BRIT) INFORMAL He'd spent most of that evening chatting up one of my friends... V P n (not pron) She was chatting one of the guys up. V n P
chat room (chat rooms plural )A chat room is a site on the Internet where people can exchange messages about a particular subject. (COMPUTING) n-count
chat show (chat shows plural )A chat show is a television or radio show in which people talk in a friendly, informal way about different topics.
(BRIT) n-count
in AM, use talk show
chat-up line (chat-up lines plural )A chat-up line is a remark that someone makes in order to start a conversation with someone they do not know but find sexually attractive.
(BRIT) n-count
in AM, use line
chit-chat , chitchat
Chit-chat is informal talk about things that are not very important. n-uncount
Not being a mother, I found the chit-chat exceedingly dull.