A concoction is a curious mixture of things, like a bunch of liquids stirred in a cup, or the elaborate and unbelievable story you make up to explain not finishing your homework.
Mix eight different liquids in a glass and you've got a concoction. Scientists create concoctions of chemicals in test tubes, and a bicycle made of junkyard scraps is a concoction too. The word’s Latin root means “cooked together,” referring to when you heat metals in order to purify them. A concoction is also a tall tale told to get out of trouble or entertain someone. If your story has ostriches, trampolines, lasers, and Abraham Lincoln, it’s probably a concoction.