Meaning

noun a warm dry wind blowing down the eastern slopes of the Rockies

noun a member of an important North American Indian people who controlled the mouth of the Columbia river; they were organized into settlements rather than tribes

noun pink or white flesh of large Pacific salmon

originBorrowed from Lower Chehalis c̓inúk (“the name of a Chinook village on the Columbia River”).

Etymology from Wiktionary, CC BY-SA 3.0