The contraction of baronet appended to a name: as, Sir John Doe, Bart.(noun)
The Century Dictionary (Public Domain)
Use "bart" in a sentence
"In what qualifies for your version of "honor", bart, is there a great reservoir of that attribute in believing whatever is announced by your leadership, no matter your own inability to know what transpired with two service people who showed vast levels of pure honor and character right up to the last minutes of their lives?"
"Glad to see you're broadening your rhetorical techniques a bit, "bart"."
"Buckwheat is also used as food in the United States, where "buckwheat cakes" are a national dish; and by the Hindus it is eaten on "bart" or fast days, being one of the phalahas, or lawful foods for such occasions."