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

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

The astrophotographer also framed the meteor with the tree line, the telescopes, and a fantastical backdrop of the night sky. — Chelsea Gohd, Space.com, 5 June 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