to participate with others, through the Internet, in a real-time conversation in a chat room by typing one's contributions to the topics under discussion on one's computer and reading others' typed contributions on one's screen.
b.
to engage in such conversation with one other person, often to obtain live tech support or customer service from a vendor's site.
noun
3.
informal conversation: We had a pleasant chat.
4.
Digital Technology. text-based communication in real time between two users over a network or the Internet. See also instant messaging, chat room.
5.
any of several small Old World thrushes, especially of the genus Saxicola, having a chattering cry.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a stew of meat, vegetables, potatoes, etc.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.