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Definition of john day

john day

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• noun

1

American A major tributary of the Columbia River located in northeastern Oregon, United States, recognized as one of the longest free-flowing rivers in the contiguous United States.

2

American A city situated in Grant County in eastern Oregon, United States, originally established during the gold rush and later serving as a hub for the timber industry.

3

American An American frontiersman and fur trapper associated with the early 19th-century Astor Expedition, widely memorialized in Oregon geography.

Example

"Many landmarks in the Pacific Northwest bear the name of John Day, a frontiersman who struggled through the region in the winter of 1811."

• Nearby Words

johannesburg
johannesburg falls
john
john day
john dory
johnny
johnny jump up

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of John day. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/john-day
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