Definitions:

1. Male salmon that reach sexual maturity and spawn at a younger age that larger males. NOUN
   • The local fishing competition awarded prizes for the largest jack salmon caught during the tournament.
2. Term used to refer to a male salmon that returns to freshwater rivers earlier than usual, typically before reaching full sexual maturity. NOUN
   • It is unlawful to angle for jack salmon after the adult daily bag limit has been reached.

Synonyms:

• dory
• jackfish
• jacks
• walleye
• walleyed pike