Lightweight /(līt"wāt`)/

Light·weight

Lightweight

n.
  1. One of less than average weight;
  2. A person of small importance or mental ability, especially one who is unimportant but cheeky and presumptuous. [Colloq., Chiefly U. S.]
  3. a wrestler who weighs 139-154 pounds.

Lightweight

a.
  1. Light in weight, as a coin; specif., applied to a man or animal who is a lightweight.
  2. made of thin cloth, of relatively little weight; -- of clothing or fabrics; as, lightweight fabrics.