In 1759, a French Treasury Chief named Étienne de Silhouette was forced to pass unpopular taxes on basically all classes, so as to help pay for the extremely costly Seven Years' War, which debatably was the first truly global conflict. Naturally, the public was very angry, and expressed it by calling all cheap or miserly things à la Silhouette. This surprisingly stuck long after his death in 1767, all the way to 1798, when darkened profiles of people emerged as the cheapest way to make portraits (this only became popular in the nineteenth century). Thus, since they were inexpensive, the portraits became known as silhouettes, a word that still exists today, obviously. Curiously, Silouette's name was likely Basque in origin, coming from a term sounding like zilhoeta or zilhoeta, with roots in the word zulo, meaning "hole". Today, usage of the word silhouette is most common in the United States and has been steady since about 1930, before when it was steadily increasing (although modern search frequency has been on the rise). So, in summary, there you have it: during the French revolution, a word once meaning "hole" became a new word for a type of painting! Etymology is amazing.
Adam Aleksic has been described as the internet's sixth most famous etymologist. He loves writing about himself in the third person, he's a freshman at Harvard University, and he has disturbing interests in linguistics, vexillology, geography, board games, limericks, and law.
The Etymology Nerd