Lightweight (film)
WordNet
adjective
(1) Having no importance or influence
"A lightweight intellect"
noun
(2) A professional boxer who weighs between 131 and 135 pounds
(3) A wrestler who weighs 139-154 pounds
(4) An amateur boxer who weighs no more than 132 pounds
(5) Someone who is unimportant but cheeky and presumptuous