flyweight

fly +‎ weight

flyweight (plural flyweights)

1. (mechanics) A weight that moves outward depending on centrifugal force.
2. (martial arts) A weight class in many combat sports; e.g. in professional boxing of a maximum of 112 pounds or 50.8 kilograms.
3. (figuratively, adjectival use) Small, light or unimportant.
   • 2010, Roger Ebert, Sex and the City 2:

     The characters of "Sex and the City 2" are flyweight bubbleheads living in a world which rarely requires three sentences in a row.

• flyweight pattern