stacker

Noun

1. Any person or thing that stacks.
   • As behavioral scientists we are not good block stackers — we don't replicate enough or build systematically across knowledge bases. - 1991, Joan H. Cantor, Charles C. Spiker, Lewis Paeff Lipsitt, Child Behavior and...

   1. A worker who stacks the shelves in a supermarket.

   2. A participant in sport stacking.

2. Any device allowing items to be stacked.
   • a spring-loaded plate stacker in a cafeteria

   1. An output bin in a document feeding or punch card machine (contrast with hopper).

3. A person who collects precious metal in the form of various small objects such as coins and bars.