DCHP-1 Online
timber ((interj.)) Lumbering 
interj. See 1912 quote.
- 1912 Timber-r-r! the long-drawn melodious call of the sawyers in a lumber camp when the tree is about to fall.
- 1942 (1946) "Timber" is the traditional warning cry of fallers from coast to coast.
- 1962 From the time the first tall tree was felled on the Atlantic seaboard to make a mainmast for the Royal Navy, the cry of "Timber!" has spread westward.
- 1912 Timber-r-r! the long-drawn melodious call of the sawyers in a lumber camp when the tree is about to fall.