timber line DCHP-1 (pre-1967)
1 n.
on a mountain, the line beyond which trees do not grow.
See also: timber limit (def. 2) treeline (def. 1)
2 n. — North
the line north of which trees do not grow; the line where the Barrens begin.
See also: first timber timber limit (def. 3) treeline (def. 2) tree limit