Gadsden flag

Etymology
Named after politician (1724–1805), who designed it in 1775 during the American Revolution.

Noun

 * 1)  An American political flag with a yellow field depicting a timber rattlesnake coiled and ready to strike. Beneath the rattlesnake is the motto "Dont Tread on Me"

Usage notes
In some later versions, due to standards for apostrophes becoming more strict since the 18th century, the first word was changed to ).