jack salmon

noun4

1. •
   (informal) Sander canadensis.
2. •
   (Midwestern-US, informal) Sander vitreus.

   • A visitor may well be baffled by “pony keg” and “jack salmon,” but Cincinnatians know that the first is a store where beer may be purchased and the second is deep-fried pike. — 1967
3. •
   A Chinook salmon that returns to the fresh water one or two years early.
4. •
   Merluccius productus, a ray-finned fish found in the northeast Pacific Ocean.