The term "featherweight" primarily refers to a weight class in combat sports, particularly in boxing and mixed martial arts. In boxing, featherweights typically weigh up to 126 pounds (57 kg), while in MMA, the limit is often 145 pounds (66 kg). This category allows lighter fighters to compete against others of similar size, promoting fair competition. In addition to sports, "featherweight" can describe something that is very light or delicate. For example, a featherweight fabric is thin and airy, making it suitable for lightweight clothing. The term can also be used metaphorically to describe someone or something that lacks substance or strength.