(Noun, adjective): A disaster of huge proportions; anything that reeks of failure. An irksome situation.
(Verb, adverb): To cause spectacular misfortune. To ruin something beyond repair due to ignorance and/or ineptness.
Etymology: Southern United States, with roots primarily in Texas.
He totally dropped the ball — singlehandedly calhouned the whole project.
Enron. What a calhoun that was.
I got calhoun'd on the way to work. it's my second speeding ticket this month.
someone who is an unusually proud warrior; able to turn the tide for any battle. (scottish)
Nathan: "We would've never won that battle if it weren't for Mitch."
Tommy: "Yeah, he is totally a Calhoun."