Blue Mountains

American  

plural noun

1. a range of low mountains in NE Oregon and SE Washington.

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Blue Mountains British  

plural noun

1. a mountain range in the US, in NE Oregon and SE Washington. Highest peak: Rock Creek Butte, 2773 m (9097 ft)

2. a mountain range in the Caribbean, in E Jamaica: Blue Mountain coffee is grown on its slopes. Highest peak: Blue Mountain Peak, 2256 m (7402 ft)

3. a plateau in SE Australia, in E New South Wales: part of the Great Dividing Range. Highest part: about 1134 m (3871 ft)

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Example Sentences

Another "PFAS hotspot" was found by water authority testing in the state's Blue Mountains world heritage area, close to an air force base, in 2024.

From Barron's • May 28, 2026

Low-lying parishes such as Clarendon and St Catherine are at risk of flash flooding not only from rainfall but also from torrents rushing down from the Blue Mountains.

From BBC • Oct. 28, 2025

Most of those are concentrated in the northeast corner of the state, but the number of packs in the Blue Mountains of southeastern Washington also grew.

From Seattle Times • Apr. 22, 2024

Another long, bumpy drive took us from the Blue Mountains down to Treasure Beach, a village in the southwest parish of St. Elizabeth.

From New York Times • Mar. 9, 2023

Toward the east lie the vast plains of the Inland Empire, marked at their farther limit by the soft curves and lazy swells of the range of the Blue Mountains.

From The Columbia River Its History, Its Myths, Its Scenery, Its Commerce by Lyman, William Denison