Definition of "timber-line" [timber-line]

• The elevation above the sea-level at which timber ceases to grow. It differs in different climates. (noun)

The Century Dictionary (Public Domain)

• "Also, it was eighty miles to Haines Mission, and the great Chilcoot, far above the timber-line, reared his storm-swept head between."
• "Above timber-line, fireless, for two days, he struggled blindly to find lower levels."
• "It was a 'cold' camp, far above the timber-line, and he had not burdened his sled with firewood."