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An adult Chinook Salmon caught in fresh water. Often combined with the type of Chinook IE Blackmouth Nooker, Not to be confused with a free hooker which is also a Nooker. Together these may create awkward conversations. See Example
Son: Hey Mom, Joe and I went down to the river and busted out 3 Nookers and one was a blackmouth.
Mom: You did what?
by JumpinJim1566 October 26, 2011
a no-charge hooker
Scott:" you want some? its free"
Kenny: "no thanks im not into nookers"
by boinblue March 08, 2010