lightweight >> ˈlʌɪtweɪt
Definition: [noun] a weight in boxing and other sports intermediate between featherweight and welterweight. In the amateur boxing scale it ranges from 57 to 60 kg.
Definition: [noun] a person or thing that is lightly built or constructed.
Definition: [adjective] of thin material or build and weighing less than average.
Example: a lightweight grey suit
Definition: [adjective] lacking seriousness, depth, or influence.
Example: the film was entertaining, if rather lightweight