n. A weight division in professional boxing having an upper limit of 126 pounds (56.7 kilograms), between junior featherweight and junior lightweight.n. A boxer competing in this weight division.n. A similar weight division in other sports, such as weightlifting.n. A contestant in this weight division.n. A person or thing of little weight or size.n. An insignificant person: a political featherweight. adj. Of or relating to featherweights.adj. Unimportant; trivial: featherweight political issues.