tree line

noun

: timberline

Examples of tree line in a Sentence

The hikers had reached the tree line by noon.

Recent Examples on the Web

On the side of the road in France’s wine region, as waves of firefighting planes passed over a charred forest, flames burst out at the edge of the tree line. — Shira Pinson, NBC news, 30 July 2026

Both vehicles went into a nearby ravine and the tree line, a police report said. — Emily Harter, Kansas City Star, 23 July 2026

Trips to the Grand Canyon, Zion National Park, or anywhere above the tree line in the mountains call for pants, not shorts, to protect against intense sun exposure. — Olivia Young, Travel + Leisure, 21 July 2026

Investigators allege that Roper threw Erving's clothing into a tree line near the bridge, and that the juvenile threw Erving's cellphone from the vehicle after Roper told him to do so. — Deena Zaru, ABC News, 14 July 2026

Word History

First Known Use

1893, in the meaning defined above

Rhymes for tree line

• affine
• airline
• align
• aline
• assign
• baseline
• beamline
• benign
• bloodline
• bovine
• brucine
• byline

Kids Definition

tree line

noun

: timberline