1) One who came from the district of Buchanan, a location near Loch Lomond in Scotland. From the Gaelic elements buth, meaning "house" and chanain, meaning "of the canon." 2) An anglicization of the German buchenhain, meaning "beech wood."
A person with this as their first/last name is most likely a weeb or very weird person. This person is most likely to do weird things if you were talking to him.
That guy is so weird id say he has buchanan in his name.
Tom: "Hey, did you see Daisy at the party?"
Nick: "Yeah. She's such a Buchanan, though. She was acting like she was way too good for the party."
Gatsby: "I still love her, though."
Skipping out on a meal in an unannounced fashion prior to the completion of the meal, for the purpose of avoiding paying the check. A cheapskate variation of the Irish Goodbye.
One of the guys we were out with pulled a Buchanan Goodbye by climbing out the bathroomwindow just before dessert, the cheap bastard.