To have a chat is to talk informally for a little while. Two people at the end of a corridor, neither of them in a hurry.
It takes with about the person and about about the subject: have a chat with Dave about the rota. The article is what makes it small and finite — chatting goes on, but you have one and then it is over. British managers use it as a soft warning, so a quiet can I have a chat with you at the end of the day is rarely as friendly as the words are.
1phrasehave a chatTo talk informally for a little while.
“Come round and we will have a chat about it.”
have a chat is a small piece of conversation.
Practised in Common Word Pairs