chat
verb [ I ]
uk/tʃæt/ us-tt-to talk to someone in a friendly informal way:
Apart from discussing official business, it was extremely useful to chat informally about work.
INTERNET, COMMUNICATIONS
to have a conversation with another person or other people on the internet, when you write down what you want to say, and can see immediately what the other person or other people are writing:
I got a message saying that she was available to chat.
chat
noun
uk/tʃæt/ us [ C or U ]
a friendly informal conversation:
have a chat with sb I had a chat with my boss today about a possible change of role.
It was just the usual idle chat, about nothing of great importance.
[ U ] INTERNET, COMMUNICATIONS
communication between people on the internet, when they can see immediately what the other person or other people are writing:
a chat site/session