"Barbell Curl" is a video demonstrating a classic biceps exercise using a barbell. It shows how to perform curls by lifting the barbell from a fully extended position to shoulder level, emphasizing proper form and technique. This exercise primarily targets the biceps brachii muscles while also engaging the forearms and stabilizing muscles. The video may include variations, tips for grip, range of motion, and benefits of incorporating barbell curls into a comprehensive strength training routine.