noun
line marking the upper limit of tree growth in mountains or northern latitudes
• Syn: ↑timber line, ↑timberline
• Hypernyms: ↑line
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noun* * *
timberline.
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• • •
Main Entry: ↑tree
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tree line,
= timber line. (Cf. ↑timberline)
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n. another term for timberline
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noun [singular]
: ↑timberline
The hikers had reached the tree line by noon.
Useful english dictionary. 2012.