I thought the word seemed a bit familiar, so I read the wiki article and noticed the use of the word at certain Universities and it clicked. I took a User Experience course at uni and remembered that the sprint for our last week was dubbed Charrette! Since, I haven't heard the word used again. I suppose "Design Sprint" aligns better with the Agile spirit.
Oh so by itself it does not imply a death March of work until the sprint is over?
It’s just a fancy name for the sprint?
It's specifically used for "working till the last second of a deadline" whether you succeed or not