1.
the altitude above sea level at which timber ceases to grow.the arctic or antarctic limit of tree growth.Examples for timberline Expand
Meadows, little strips of alpine freshness, begin before the timberline is reached.
The Land of Little Rain Mary Austin
Already weak, they did not get down to timberline the first day.
Watched by Wild Animals Enos A. Mills
The territory dominated by old “ timberline ” had an area of about eighty square miles.
The Grizzly Enos A. Mills