Dictionary.com
Thesaurus.com

ouncer

American  
[oun-ser] / ˈaʊn sər /

noun

  1. something weighing a specified number of ounces (used in combination).

    The deluxe hamburger is an eight-ouncer.


Etymology

Origin of ouncer

First recorded in 1885–90; ounce 1 + -er 1